Hmm. Tinfoil time.It's not impossible that it set off from GS-X b45-0 on Thursday and the reason it wasn't detected earlier is that it wasn't making a noise earlier.
We first detected the Oochorrs one about 18 days after the Proteus Wave event, coming from a system about 1800 LY from HIP 22460.
We first detected the Slegi one about 30 days after the Proteus Wave event, coming from a system about 3000 LY from HIP 22460.
What if the noise heard after the Proteus Wave was a call originating in the HIP system, broadcast omnidirectionally (and therefore heard with high intensity by the survivors in that system) which is now spreading out at 100LY/day and encouraging flares to activate and come to have a look?