I'm curious if anyone has recent experience with using a BA-provided Infant Seat in the new Club Suites (as well as the old Club World). We are looking at booking the daytime BA238 BOS-LHR, which sometimes is operated by a 77W or 781 with new Club Suites, but sometimes is on a 789 with the old Club World. We will be traveling with a 20 month old, so I'm trying to understand how/where the Infant Seats (not carrycot) attach in a Club Suite and Club World - we would mostly need the seat for taxi/takeoff/landing. Are they booked as a lap infant and then the infant seat is attached to the adult's seat?

I have plenty of points and don't mind booking an extra seat for the 20 month old (I'd be booking through CX, and I've read other experiences where a CX-issued award operated by a partner airline has been a nightmare to add a lap infant), but I'm trying to understand how the infant seat is configured and typically booked. Could anyone help clarify?