The H2 back panel includes features for attachment of external vent hoses. Makerworld is full of models that jump on this opportunity. Youtube has multiple videos of users who have used this to feed into vent systems. The P2S external fan kit and attendant print control options would be a nice addition to the H2 (or X1) series that could turn on external booster fans or open vent system gates as appropriate. I am designing on my own vent flange and hose coupling (cuz I have Inventor and I can, so there) and am including mounting for a sender receiver photo sensor (Amazon “infrared break beam sensor module”) that will detect the opening of the vent doors. I would jump on using the P2S external fan interface board if the H2x would signal it when the internal vent fan turned on.