So I was playing Anarchy Reigns and then went AFK to have lunch. After I came back, I continued playing. Shortly after that, I got a message saying that I was disconnected from XBOX Live. Since I thought that this had something to do with me going AFK I decided to restart my XBOX. It seemed to work for a few minutes but after that I got disconnected again. Now I made a break for a few hours hoping that it would resolve itself. Unfortunately, it didn't. My XBOX is connected to a router via RJ45. I don't think that the problem is related to my router, though.
Additionally, I'm completely new to XBOX Live and have a question which probably doesn't belong in this section. Anyways, I hope it's not a problem that I attach it to this post. If I go on playing any game without being connected to XBOX Live and do achievements, will they get marked as achieved the next time I log in to XBOX Live? Some PC games on Steam do feature this so I was wondering whether XBOX Live does that too.
Any help is greatly appreciated.