re: Star Trek: TOS Watchers - S2 - Return to Tomorrow *Page 14*

And for those casual fans who do not know, the Constellation commander, Matt Decker is the father of Stephen Collins' character, Willard Decker, from Star Trek: The Motion Picture, although that is not altogether clear from the film itself.

However, in reference material and other sources (such as the novelization), it is more than mere apocrypha or speculation.