MetropleX is there a way to confirm this?
I underline again that I am not referring to Play Services alone but rather communication between the two.
I am concerned that "operational" tasks (feedback, crash report, potentially data) are managed by Play Services rather than GBoard itself by establishing a connection between the two. (Again not Play Services acting alone but mutual approval for communication between the two)
I mention this for GBoard, but this might apply to anything 'google related' such as Google Photos or Camera.