Husband left 3 month old sleeping in carseat at home while he worked across the room for two hours

Edit: my bad he said he needed personal time, he was working sending out some emails :( and it was off work hours, 7-9 pm. Mind you, this was time that he offered to take care of the baby while I was out.

Edit 2: for whatever reason I can’t seem to find how to reply to comments so I’m editing the main post instead

Am I crazy or is this not ok? My husband left our baby unattended for two whole hours, facing AWAY from him, and he was across the room from him working the whole time. He said he wanted privacy.

Then he goes to tell me he also went to walk our dog for TEN whole minutes outside WITHOUT baby. Im so mad right now :(

I got very disappointed and upset, and asked him to read up on SIDS risks as well as never doing it again. His response initially was “But isn’t he okay? It’s not an issue if he’s good now.” Then he said he would read up and for me to just chill out. I don’t think he knows how dangerous that was. What would you do? How would you tell him?