BF1 Xbox stuck on connecting
Did you try to reboot your router (turn off and remove power cable for 5 min. Then turn on it back)? Could you please check these articles?
https://help.ea.com/en-za/help/faq/connection-troubleshooting-basic/
For support, please visit the EA Help website. For instructions on how to use the EA Help services, please refer to How to use EA Help.
If that doesn't help, please check this:
In case you have "Failed to connect to EA Online" issue in Battlefield 1 or Battlefield 4 on your Xbox One you will need to try this possible solution:
1) Go to Xbox Settings►► All Settings►►Network (Network Settings)
2) Then, go to Advanced Settings►► Alternate MAC Address and select "Clear"
After you will need to turn off (unplug the power cable) your Internet Modem (Router) and wait 15 seconds and turn on it. Then, also for Xbox One (turn off your Xbox One and unplug power cable and wait 15 seconds and turn on)