@Griffster thanks for the tips. I ended up disconnecting from Optus after the horrible experience with support. From memory the status LED was still green which is why I was assuming it was the Optus...

I've just had a drop out and unsure how to check whether it was my BE65 mesh or my Optus 5g modem. Any tips on how to sift through the logs and see what happened? Main BE65 is plugged into the 5G...