Geno tends to keep his starters in until the opposing coach pulls his/her starters and then he'll pull his immediately. If the opposing coach doesn't go to the bench players Geno will eventually go to his bench, but it often won't be until there is only a couple of minutes left in the game. I've always seen this as standard operating practice for coaches, but I've seen people claim they are unfamiliar with the losing team having to wave the white flag when being critical of Geno leaving his starters in.
Geno himself has been critical of coaches that keep their starters in the game when being blown out instead of signaling the white flag. He doesn't like coaches taken advantage of his bench players just to make the final score look better in the box score in his opinion.