Question: What is Agg., when Team 1 is "Tirana"?
SQL: SELECT "Agg." FROM "2-18210406-1" WHERE "Team 1" = 'Tirana';

Question: What is 2nd Leg, when Team 2 is "Dunaferr"?
SQL: SELECT "2nd leg" FROM "2-18210406-1" WHERE "Team 2" = 'Dunaferr';