To be specific, the working proposal is that the gen2Actor listen for gen2GuiderFile=path keys from the agActor. On receipt, the gen2Actor would generate a PFS status keyword (PFS.Guide.Filepath?, with that path being valid for whatever mechanism Gen2 wants to use. To start with we are proposing to use the same mechanism which is used to archive frames; i.e. we leverage an already implemented and tested mechanism.

Yoshida, Hiroshige , cloomis
There is an actor called VGW actor to send image to Gen2, and I heard that communication with Gen2 was already tested, although this actor doesn't seem to be listed Github repository now...
Is this the actor which has functionality discussed here? 

Yoshida-san confirms that the VGW actor is the actor in question.

This will be discussed with Eric/Yoshida-san/Yuki later today and if agreed, this ticket can be closed.

During June run, the AG images were sent from VGW actor.