=QUERY({{ARRAYFORMULA(ROW(INDIRECT("A1:A"&COUNTA(QUERY(MY!A2:A; "select A where A is not null")))))QUERY(MY!A2:A; "select A where A is not null")};  {ARRAYFORMULA(ROW(INDIRECT("A1:A"&COUNTA(QUERY(NY!A2:A; "select A where A is not null")))))QUERY(NY!A2:A; "select A where A is not null")}}; "select Col2 order by Col1")