BTW, since I was reading these passages, on the comparative stealth levels:
To End in Fire, pg 788 (~92%); GSNSS Irving Fischer wrote:"We can't confirm it, Generalfeldmarshall," Auberjonois said, "but we're certain they're flooding the system with recon platforms of their own. We've seen just a few weak impeller traces, but their drones are obviously just as hard to find as we thought they'd be."
[...]
Auberjonois nodded. They knew the Grand Alliance's reconnaissance drones were both highly stealthy and, courtesy of their onboard micro fusion plants, extraordinarily long-legged. The Alignment's tech might actually be even better, however. It was certainly better than anything the Solarian League had ever had, and Galton's defenders had produced two different recon platforms. The Alpha Drones incorporated every upgrade the Alignment possessed, although their power budget remained badly limited compared to the Grand Alliance's Ghost Riders, while the Beta Drones were virtual clones of the SLN's current technology."
To End in Fire, pg 796 (~93%) wrote:"I think I know what part of the delay was, Ma'am," he said. "The transmission's a standard com laser, but it's coming from a platform less than two hundred thousand kilometers from Crick. And sensors are picking up directional grav-pulses from the same platform."
"And we didn't know it was there until it started talking to us?"
"No, Ma'am."
[...]
"Two things before I do, though." She stook her hand from Nerguizian's shoulder and folder her arms. "First, they got an FTL communications relay within two hundred thousand kilometers of Crick without us ever seeing it coming."
To End in Fire, pg 801 (~94%), HMS Imperator wrote:Ransom's hands were busy at his command station as he spoke, and Petersen turned to her plot as he threw Imperator's Combat Information Center's fresh datapoint onto it. The new icon blinked with the rapid strobe of an unidentified contact, and Ransom was right. It was headed towards Grand Fleet from the inner-system and moving a lot faster than the elusive recon drones they'd detected earlier. The Alignment had deployed two different types of recon platforms, one which was obviously virtually identical to SLN's last-generation drones and one that was one hell of a lot stealthier. Petersen agreed with Duchess Harrington and Captain Jaruvalski that they wouldn't have mixed them that way if they hadn't hoped to learn how readily Grand Fleet could detect, lock up, and destroy their first-team platforms. Which was why Grand Fleet had declined to attempt anything of the sort.
Not that Petersen was at all confident that they could have taken the stealthy ones down if they had tried.
What this tells us that the GF
had picked up the Alpha Drones, which are described by the narrator (following Adebayo's mind) as incorporating "every upgrade the Alignment possessed." Not "every upgrade the Alignment allowed Galton," but "possessed" though I'll grant that that may still fall short of the active camouflage smart paint, but not by a lot, and definitely not an even stealthier drive system. The GF couldn't lock up those drones sufficiently to take them completely down, but they knew they were there.
Meanwhile, the Galton Navy could pick just a few weak impeller traces from the Ghost Riders, and definitely not at all the Hermes relay buoy, and the latter got to two thirds of a light-second. Remember that the experiment we know about detecting spider ships was conducted by the MAN at one full light-second.
The narrator is also saying that the Alignment's stealth may be superior, which is contradicted by facts. It's likely that the narrator was indeed just relaying Adebayo's train of thought and, at that point in time, they had not known the relay buoy was there yet. I'll also grant that the relay buoy is no recon drone and probably has a weaker impeller; it certainly took longer to start the communications than the detection of the recon drones, though that's partially explained by the need to achieve a zero relative velocity.
And bringing back again to whether Galton can be believed to be the final redoubt: nothing in the MBS could pick up the graser torpedoes before they opened fire, and yet the GF could pick up the Alpha Drones. I'll grant that the GF sensors may have improved in the year and a half since, but the RMN will know if their sensors of the time could have picked up these drones.