Try to go earlier to save yourself the worry. I recently went to Shannon TATL. I could have worked most of the day I left and taken the later flight out of CLE and had only 55 minutes connection. At the recommendation of the CO booking agent, she convinced me to take the earlier flight that gave me almost 3 hours layover.
Well played! The earlier flight we took was an hour delayed, but we still had 2 hours to go to PC and shop. Looked at the board before we boarded, the later CLE flight was delayed and wasn’t going to get in till well AFTER our Shannon flight left. Shannon flight left on time…..needless to say, I’m glad I took the earlier flight.