Alice, a Chimera, Moves S2S with Bob, a Fiday in an IMP-1 state. Alice's player ends her turn. Bob's player activates Bob and spends an order. Q1. What in the rules prevents Alice from Moving S2S with Bob? Q2. At what point, if at all, does Bob become Engaged with Alice? I can't find anything that prevents you moving S2S with an IMP Marker. Which is important as it allows you greater freedom of movement around IMP Markers.
The first bullet point from the “Effects” section of the Impersonation_State page on the wiki is the rule that prevents it. “Troopers cannot enter Silohuette contact with an enemy Impersonation Marker.” https://infinitythewiki.com/Impersonation_State