I was waiting to load into a Gambit match. Right when the match is about to load I get a "Booted to Orbit" screen. Then, 3-4 times in a row, I get the Oops! You left a Match Overlay. First, something's got to give Bungie! I don't get penalized for these server errors with Crucible but I do with Gambit?! Not very encouraging to players who already dislike at best/loathe at worst this activity.
Second, I know it's not MY connection because there were no errors reported with my gear or the connection via my router/ISP info. It's ridiculous that someone has the ability to get a ban for this when there's clearly something wrong with the game mode. PLEASE look into this!
Your connection is not just in your home, it is everything between your system and the game service, as well as everything between your system and all other players' systems.
It doesn't matter why you disconnected, only that you did. It's up to you to troubleshoot your connection.
If using wifi, don't. It will occasionally hiccup
Otherwise, go through all the drills required to check for a persistenly stable connection = no packet loss, low latency, ample bandwidth in both directions, low or no jitter, open Nat, etc.