I don't know if they have each other as peers. I do know that at least two pools have complained that ignoring the subsat tx filters caused them to lose money via an increased orphan rate. CKPool complained about this here: https://x.com/ckpooldev/status/1957235824451559746 and Mara Pool complained about it here: https://x.com/PortlandHODL/status/1958520763083825640
So if they *are* peering with one another it is apparently insufficient. The miners who *ignore* that peering (maybe Ocean?) and just broadcast blocks to the rest of the network benefitted by getting their blocks propagated faster, and winning more races. I want to see that play out again, but this time with inscriptions, and to that end I am excited to see the Knots count rise.