He does, in a way, feel like he's being blackmailed into this. However, Samandriel knows (or at least hopes) in this case that it's for his own good. He looks up at Hannibal, holding his gaze for a long moment while he weighs the pros and cons.
If the other man is plotting some long game revenge, Samandriel's not going digging around in his head looking for it, and if he figures out that it is, indeed, the deal here, well, making Hannibal forget would be easily enough. He doesn't want to do that to anyone, but he will if he has to.
"Wednesdays, then. In the evening preferrably, but...we don't have to have a set time for things. Just," Samandriel pauses, chewing on his lip while he considers, "if you're more comfortable texting instead of talking to me on angel radio then feel free."