Yes, if SGP is slaving the dome we will wait until the dome has finished slewing. If SGP is NOT slaving the dome, or doesn't even have the dome connected which is likely the case, then we have no idea what it's doing and the "long delay" that Chris mentioned is your only option. Or you may be able to connect both through an external slaving application that exposes your telescope differently to us and use that to handle when things are done (I don't know if this exists. But there are a couple of 3rd party dome/scope slaving applications out there that export a ASCOM telescope)
Thanks,
Jared