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AA lands at T1 while Etihad departs from T2 https://www.dublinairport.com/flight-information If your bags are checked through to your final destination the Flight Connections channel will get you to your departure gate in around 20 minutes https://www.dublinairport.com/docs/default-source/default-document-library/dublin-airport-flight-connection-guide.pdf?sfvrsn=2