Linking Oneworld flight bookings
 

I’m scheduled to fly on a BA ticket (but AA codeshare) from London to Chicago and need to link an onward connection (still to purchase) to Columbus with American.

I gather it’s possible to link the two bookings so that it avoids issues if my 1st leg flight is delayed.

Should I make the booking via the American site and then call BA to link it?

Any help is much appreciated.

Thanks!

No. "Linking" is just text in a reservation that may or may not be read.
No
Separate tickets are treated a separate.
In the first flight is late its your problem or the good will of AA.
AA used to offer some protection, but that wording changed a few years ago.--> https://www.flyertalk.com/forum/amer...ckets-pnr.html

Why not book as 1 ticket LHR-RD-Columbus?

Thanks for the heads-up.

The leg is a last minute addition. We didn’t book all the way through as there was a change in itinerary after we’d booked the LHR-ORD return.

fyi - tried calling BA to insert the AA flight (just for reference purposes). They refused as “it’s not booked as a BA ticket”.

As Mwenenzi mentioned, you cannot expect AA/BA to through-check your bag and protect you in case of misconnection when the 2 tickets are booked in separate PNRs. Depending on the change fee and fare difference, you might want to change your LHR-ORD ticket to LHR-xORD (or another transit point)-CMH. Otherwise, leave ample time to minimize misconnection risk and for bag re-check (if needed, may not be much of a difference since it is International-to-Domestic).