Christie is a former prosecutor, he knows the games that are played.
1) Much more control over the transition team schedules...nothing like this allowed. Everyone thoroughly briefed on how to respond to this kind of thing.
2) Flynn had no obligation to meet with the agents. Christie would have told them to submit any questions in writing to the transition team lawyers or else piss off. Then he would have called Comey and ripped him a new one. Comey wanted to keep his job.
McCabe is on record sending the fishing expedition because he figured the transition team was filled with novices who wouldn't know what they should do.