When Rosemary and Blanche arrive at Andy's house, he calls the first one "Rosemary" and the second one to enter "Blanche", but a second later when they walk over to Amanda, she calls each one by the opposite name.
Andy's expression changes markedly between camera shots when Barney blocks him from sitting in a chair by sitting in it himself.
After Thelma Lou's mysterious meeting fails to happen the first time, you'd think at least some of the women would call her to ask what it was all about. But when they arrive the second time, they're all still clueless as to why they're there.
Something odd happens when the women arrive unexpectedly at Andy's. After Andy acknowledges the first few women and directs them to the living room, the remaining women just stream right in. They don't address Andy at all, they just walk past him like they already know where they're supposed to go.
In the jailhouse, after Barney forbids Andy to see Helen again, Andy retorts that he has a date with her tonight and "she's coming to dinner!" But later, in Andy's kitchen, he tells Barney he's going to pick Helen up at her house, then go to Mt Pilot for Chinese food.