If the error tells you it's your connection to Bungie, there's obviously something on your end that's happening. Don't just blindly assume "oh it must be Bungie, my Internets is fine because I can get on Google". You probably have something wrong with your upload bandwidth. Do a network connection test from your console and post your download speed, upload speed, ping response, and if you have any packet loss. Check the diagnostic error logs in your modem. Post whether you're using wireless, or hard wired over Ethernet. Or any other device like Ethernet over power adapters. Are you using DSL, or Cable modem, or FTTH (fiber to the home) technology? Don't blame a game publisher for your network issues.

Thats why the whole Team Sometimes disconnect at the Same time? Sure its never Bungie fault 😁. I forgot.