Disconnected suddenly from game, unable to rejoin

Despite not having any lag or ping issues appear, The message " Contacting Marathon servers"  appeared for a few minutes then I suddenly got disconnected, which in turn Eliminated me from the game. This is an enraging issue due to the fact that I had around 5k worth of gear and lost it all to no fault of my own. The only thing I don't understand is why this disconnection led me to be eliminated and unable to join back. especially only a few minutes in the match being unable to rejoin while your full team is alive makes no sense.