The audios themselves basically confirm this in Zagreus. Basically, there's this bit where the Doctor gets a glimpse into parallel-running timelines and one of them has stuff from the DWM comic and the other one stuff from the novels.

ETA: There is some Doctor/Charley shippiness but it's mostly confined to Zagreus and Scherzo (and afterwards they kind of seem to mutually figure out that they prefer being friends.)