This is a Joint Campaign for Ryanair Pilots and Cabin Crew. The T&G is taking on Cabin Crew members and Pilots will join BALPA as they are the specialist union for Pilots. BALPA and the T&G are working together and this is the best situation that fits for all employees.
As simple as that as both organisations are working together for all Ryanair employees. BALPA = Pilots. T&G = Cabin Crew in Ryanair or any of the poxy contract agencies.