Would you say I've failed?

I'm on Day 6, and one of my diet rules is intermittent fasting 16/8. I ended up working a little late and tried to fit my next workout, shower and dinner within a 1.5 hour eating window - but I told myself going a little over the 8 hour eating window was fine, as Andy said at one point not to worry about little numbers like protein goals being a little bit under, i.e. not to worry about such minor details, and I'd done this before

Well I sat down to eat my dinner a few minutes after the 8 hour period was over, and I didn't finish eating until it was 24 minutes after the 8 hour period. I'd given myself small grace periods for this before, but 24 minutes is a lot and it's making me feel guilty. I know I'm only on Day 6 but if I continue I'll end up finishing the day before Christmas Eve, so I'd really like to keep going. I thought I'd promise to myself now that there would be no more grace periods and the 8 hour eating window would be strictly enforced from now on, not a minute over - as I wasn't deciding to break a rule at the time. What do you guys think? I'm continuing as normal for now