How long we can stay offline?

I was busy playing my sims when we had a powercut, I played until my battery of my laptop died which was about four hours. Only after exiting the game did I see the message that EA app got disconnected. I did not try reconnecting since the battery was like 10 percent, but I had no problem playing while I had no internet. Although I was already ingame when we had the powercut, so not sure if I could connect without internet. I can test it for you if you want. I will just unplug my fiber and try to connect to my game ;)