I don’t doubt your dad’s memory, just that he may not have been privy to everything. That fist pan and scan LD release in the US may have used the master he created for video tape. We’d have to compare them. My old tapes were water damaged and got thrown out so I don’t have any way to compare them myself. Bit there are preservations out there of both tape and LD releases. All the various LD audio tracks were wonderfully archived and shared by Schorman with notations as to weather the original was analog or digital.