Oklahoma head coach Brent Venables is pretty confident in the quarterback depth going into the 2024 season, led by Jackson Arnold this year. Arnold is the crown jewel of the room, a former five-star and ready to take the leap. But he’ll be backed up by Michael Hawkins and veteran Casey Thompson. It’s a vast difference between Dillon Gabriel and a true freshman Arnold last fall. “I feel better than, really with Dillon by himself last year and Jackson, you know, being a true freshman where he was,” Venables said. “We felt great about Dillon and, and there’s a lot of unknown after Jackson and I f…