being offline means not on at the very moment, as of on xbox live your friend may be offline for 2 hours or something. but the main meaning is if something is not on connected network or on that main modem or router to send the signals on the console that your online or offline is not working or something may unconnect for a few hours or minutes.
Not online
offline
offline
you are playing minecraft offline so you cant play multiplayer
When I was teaching, I used the term offline to mean not online, but in the classroom. Therefore, you should expect your offline examination to be done in person, not on the internet.
appear offline
All it means is that they haven't received the message yet, but they will when they come online.
You're probably offline.
it means that they are unavailable for the time being....they will be on later!!
It means your not available to chat because your not lodged in.
If you mean by does Xbox live ever go offline. The answer is yes, if there is work which needs to be done, it may go down for a few hours. This is not common.
if someone post something and it says there offline that means there chat is offline
Go to the Minecraft website and download the offline launcher, note that the offline option only appears if you are actually offline.