Crimson / Eastern Rosella

Hi

I saw this rosella feeding with an adult crimson rosella, and saw them both fly off together.  Been puzzling over  it for a while - at various times I have decided its an eastern, and then a juvenile crimson and then an eastern crimson cross?  Its the white/blue cheeks patches that really make it look a bit of both.  Photos taken at Scheyville NP - western sydney.

Interested in others opinions ... thanks