Would it have been covered by disruption between Bournemouth and Southampton Central? I'm struggling to remember if that notice only mentioned SWR but I'm pretty sure it was up at some point. It's not particularly helpful for people up north to have to check for disruption half way down the country of course!
I was on
1M58 from Southampton to Manchester which got in annoyingly 56 minutes late. And when I arrived there was a platform alteration for an XC arrival (arrivals can get announced as alterations? Learn something new every day!) from Bristol that was 2 hours late.
So XC was definitely having major issues.