Board Thread:The Panopticon/@comment-45314928-20200525010944/@comment-45314928-20200525185441

“there was authorial intent that River and Ten have interacted on at least some of the things she’s mentioning” - there’s no proof of that. while 10 was intended to be the incarnation to visit Asguard with her, it never came to and eleven went instead.

I can’t remember any exchange between 10 and River to confirm that they had previously met (or even suggest it). but if there was any suggestion it has been completely retconned with her meeting even older Doctors (as didn’t she say 10 was the youngest she’d ever met?).

as for Sarah and Jackie - they served as the companions in School Reunion and Army of Ghosts / Doomsday respectively, and then travelled again in Journey’s End. you may suggest that Jackie doesn’t count as the Doctor didn’t know she was aboard, but then she also had an adventure with him in the audio Infamy of the Zaross and some novels.