I wouldn’t get too excited about that sort of thing, can’t imagine AerLingus would advertise that they are running interviews in February then not do it.
If I was a betting man I’d say they probably have just found themselves with a change to their training programme and found some spare training capacity, which is very common at major airlines. Rather than waste capacity they have offered interviews to candidates that can fulfil a need slightly easier (perhaps rated or lots of jet time, that’s sort of thing).
Just me speculating, but I wouldn’t lose heart. Keep preparing yourself, practicing what you think will help with selection, and when that magic call comes you’ll be ready! Dag