Being a captain has as much to do with the non flying part (sometimes more). Dealing with agents, dispatch, crew skeds, crew etc can often be as challenging as flying the jet. Both take time to settle in to but as others have said, the Bad Dog is just an airplane and once you learn and respect its quirks, you can concentrate on the captain part. Every airplane has them.
But I do know there is a god because I never had to fly the dog 😜