I remember my first trip to ORD at my regional. We got on the A taxiway and the alley was blocked, so the Captain just kept making right turns between A and B without a clearance. He's said just don't stop and and they couldn't care less what we do, if you stop, they yell at you lol. I've unfortunately flown there enough to know what taxi route they'll give me, but I avoid the place big time. One of my bids is actually avoid long layovers at ORD, because of the long ass drive into downtown during rush hour.
This is of the many reasons I like flying the 717 into all the burgs & villes throughout the eastern U.S. You almost never have wait on anything, no conga line, rarely any "flow," one taxiway to one of the 5 gates, security is a breeze, and the people are nice. The hardest part about these airports is sometimes you have to turn the lights on yourself and occasionally you have use your phone to get a clearance.