Hello and welcome to the forum, roosterwayne.
It appears that they both were in one film, but George was listed as uncredited. The movie was a 1938 B western titled "Pals of the Saddle". Duke played Stony Brooke, one of the lead characters. Robert is listed as a rider. While they both had extremely long careers, that is the only time they crossed paths on a film.
Feel free to stop in anytime and look around. There is plenty to look at and read here. Join in anywhere you may feel like it.
Mark
