Originally Posted by
scottishpoet
Your previous experience when you had to collect bags and recheck, this would be the case if your had one booking to LHR and then a separate booking from LHR. In situations like this AA and BA will not check through bags.
I assume that on this occasion you will have one booking, PHX to FCO, in which case your bags should be checked through and you will not have to collect them.
In terms of the T3 to T5 connection, this should take around 45 minutes from when you leave the inbound aircraft to when you have cleared security in T5. The bus journey itself is around 10 minutes.
Assuming an ontime inbound arrival, a generous 15 minutes to leave the plane, and being at the T5 gate 40 minutes before departure this would give you around 1 hour 15minutes in the lounge.
I suspect that after rethinking about it, we probably did not have to collect and re-check baggage in LHR. We were on one booking last time, and we will be again this time. I confused LHR with our experience in ORD, where (due to this being the first stop in the US after being abroad) we DID have to collect and recheck baggage, an also had to take a bus between terminals. These long haul flights and less than normal sleep times (and aging brain cells) do negatively impact memory.