Heathrow Connection from Terminal 4 to 5?

[tmdl]

If anyone has any experience please help

My in-laws are flying Etihad (business) from AUH to LHR arriving at 3.15pm to T4 and I was hoping to get them onto either a BA flight from LHR to WAW leaving T5 at 6.10pm or LO flight leaving T2 also for a 6.10pm departure.

My understanding is that EY & BA/ LO do not have co-share or agreements in place so questions are

1. because my in-laws will need to collect their check-in luggage, will they need to clear immigration at T4 and then re-check in at T5/T2? also is there any fast-track immigration for business class?
2. Does anyone know how long this process may take? and is 2hrs and 55mins a reasonable amount of time to do this transfers?
3. Is there any service that can help them as they are in their 60's

 

[jrfsp]

If they are on separate tickets then i wouldn't expect EY to check them through however you never know if they ask.
There is FastTrack however if on Aussie passports the egates are usually way faster.
I wouldnt do a connection of 3 hours on separate tickets at LHR. Id give it at least 4 hours.

 

[tmdl]

If they are on separate tickets then i wouldn't expect EY to check them through however you never know if they ask.
There is FastTrack however if on Aussie passports the egates are usually way faster.
I wouldnt do a connection of 3 hours on separate tickets at LHR. Id give it at least 4 hours.

Yes they would be on seperate tickets as the Business flights are via VA points

 

[NM]

For me personally, and I tend to be rather risk-averse, for a trip involving different carriers on separate tickets I would plan for an overnight stay at an airport hotel and continue the journey the following morning.