Originally Posted by Tafflyer

I am booking a trip via the UK to Dublin and find seemingly contradictory information on my benefits as BA Gold.

Clear is that if I want tier points I need to book the BA code on BA stock.
Clear also is that when departing LGW (EI operated) I will need the BA code for lounge access. Would I also get fast track at LGW?
If I depart LGW on an EI ticket, there is good pricing for AerSpace (like CE but not called biz). Advertised fast track states DUB only, but no info if BAEC gold gives this.
When departing DUB on a BA code, BA ticket but EI operated, I understand I get EI lounge access but what about fast track? This is T2, not where BA departs from.
Transferring in LHR T2 to T3 BA to FAO (operated by AY) is clear that I get full lounge choice in T3 but is there a fast track for connections as in T5?