Make of it what you will.
Flybe Franchises - Codeshares | Flybe UK
The BA ticketing server isn't showing anything yet, and just shows an error if you try and fly from BEB SYY SUM etc to say LAX.
When the flights appear in the flybe system if they then appear in the BA then a codeshare with Logan I think s unlikely.
I suspect there is also issues with who is responsible for missed connections Logan just can't afford to take a hit for 3-4 punters missing long haul connections it would wipe any profits out for a day.