I had a 5 hour separate ticket connection in YVR today. There was a 30 minute option.
They met me at the gate, drove me to connection security, met me after preclearance, and drove me to the gate.
Every time I wonder if it's worth maintaining status if I'm just buying J, they do something like this and get me home 4.5 hours early.
Edit: I was at home, on my couch, in my underwear, before my original flight even started boarding. It was going to be a 24 hour travel day, and ended up being a 20 hour travel day. I can't even express how much this improved my day. My request was just if they could move to the earlier one, then move me back if I didn't make it. I did not ask for any in-person contact. But the golf carts probably made the difference.