Originally Posted by Dimnos
[...] my dad always said him and Landry were sort of at odds with each other.
That would not surprise me. "Dandy Don" was very free-spirited (but in a good way!) while Landry was very much a "by the book" coach. In this day, they would probably get into a fistfight on the sidelines, but things were generally more civil in those days.
Or at least they were able to keep their disagreements quieter due to the dearth of television cameras on the sidelines.