CU-SeeMe worked pretty well in 1995 if you had access to a half decent Internet connection, which admittedly most people didn’t.

For well funded organisations, ISDN video conferencing facilities were reasonably common.

That took until skype in 2003 I guess. The idea is pretty old though and people were trying for it for a while from different angles.

Maybe not between continents but we had meaningful live video chat in 1968