Talewind
as xwindflirt has said 24/48 hours is pretty much standard for most longhaul trips these days.....
A very rough rule of thumb is that for a short longhaul sector to a destination BA operate to daily you will usually have a 24’ish hour layover, i.e. a nightstop (e.g. SEA,ORD, BOM).
Longer longhaul sectors usually generate a 48 hrs layover if it’s a daily serviced destination (e.g. LAX,HKG,EZE) due to a combination of Union agreements/FTL requirements.
Any longer layovers are usually down to either BA services being less frequent than daily to that destination, or a mix of equipment on the route ( e.g. a 777 one day, a 787 the next), or there is a downroute shuttle day embedded in the layover (on the 777 that’s typically some places in the Caribbean).
Whether the long layovers are popular and senior or not depends on the destination- not all long slips are on the beach, they might be somewhere sandy but dry
