Originally Posted by prestonh

they didn't make it to the Atlantic, it was near the Channel. Looking at the log there appears to be a normal climb profile and cruise. The crew may have been running checklists and conferring with dispatch on diversion options if the a/c was stable. Maybe something changed or degraded in that period and the decision was made to return. 2 hours of flight is landing lighter as well. We don't know the sequence or all the events.