That's OK. Yesterday poor old TIger was holding up the Rapid exit (B8) off 16R not sure as to whether he should give way to us as we taxied northbound up Bravo. Needless to say we had been instructed by Ground to hold short of Bravo 9.
Now it's fair enough to be cautious, but we were both stopped by this stage, and only after prompting by the ground controller did they move. Their excuse. "We weren't sure if we had to giveway to the other aircraft"
If your going to operated transport catagory aircraft into a major Capital city, you really should know the rules!