I had a wierd vacation. Stuff wasn’t working but it wasn’t not working consistently and would work some of the time but I had a couple of big problems that were annoying to deal with. Anytime I’m > about 120, I will at least think about a CB so I would hae hit the 275 w/ a correction bolus. I might go walk to the dog or something to help it out too, except maybe not after midnight? I never took Lantus though, as I went from R/N to pumping Novolog. I don’t usually get that big of a spike out of basal “oopsing” but, occasionally I’ll turn it down to go running and get distracted and realize it later and will note that it will spike pretty quickly from being turned down. If you are absolutely sure there are no other factors (slow food, missed carb counting, Jupiter moving in line with Neptune…whatever?) then you could probably conclude that two hours late will cause that sort of problem. I’m not sure there’s quite enough to do it but I’d say it’s a possibility?