Flying ALC-MAD-LHR in May. My girlfriend will be on the ALC-MAD leg with me then connecting to MAD-BRU. As a BAEC Gold would like to guest her into the Dali or Velasquez lounge whilst we both wait for our separate connections. As we will depart for our connections from different terminals (her from 4, Schengen, me from 4s, non-Schengen), will I be able to access the Dali lounge before clearing passports to non-Schengen? Or will she be able to come with me to 4s and use Velasquez before returning to 4 to catch her connection to BRU?

Used Velasquez before and was impressed, assuming I would be OK to access either/or, any opinions on which one is best?

Any help appreciated...