Hello, I will travel with a US passport from TPE to DUB, vis AMS, and vice versa early August and early September. As for the itinerary, there is an option of a 50-minute or a 2hr 55 minute layover on my way in. Then on the way out it's either 55 minutes or 4 hr 55 minutes. I am concerned that 50 minutes on the way in and 55 minutes on the way out would be too tight. Yet 4 hr 55 minutes seems like a long time. Also, will I have to go through security check? I will try not to check any bags, though I may have to check 1. Please advice how I should arrange my itinerary, thank you very much.