Summer schedules have your flight arriving LHR
) at 0715, with ZAG
scheduled at 0830 (T1) so MCT is spot on at 75mins, although most transatlantic flights tend to arrive early! Let the c/c know you have a connex!
Make sure you check your bags through to ZAG
- it not only saves waiting for them in T4
and then the hassle of getting to T1 in time for flight, as they are through checked, and if you're not at the T1 gate in time, they'll be calling for you by name to get to the gate 'as the a/c is about to depart'! They won't go with your bag and without you!
Another thing about through check-in is that as you'll be checking-in at IAD
, you'll be one of the first to be actually checking-in for the LHRZAG flight, so you 'should' get a wider choice of seats, except those pre-allocated at reservation time - which, of course, is another option!
Per Ardua ad Astra! ........ Honi Soit Qui Mal y Pense!