so is it chat only on bitwine?
Yes chat only. Many of the readers though can't type or the transmission is very very slow. Either way once you hit send, it takes between 1 min to 1.5 minutes, maybe 2 for the reader to respond. There is an office tab that keeps all the transcripts and you can copy/paste or download them I believe to keep and review later.
If you ever cancel or delete your account those transcripts are deleted as well.