The telepathy on a succubus' profane gift states "across any distance."
Does this include inter-planer travel?
As far as i've seen it handled, yes. The Succubus can sit comfortably in his underworldly home and suggest the hell out of you.
his?
o_O
Demons are sneaky. You never know.
I meant to write "its", but hey, assume away. This is the internets. EVERYTHING can be futa...