Complex sentence: The pilots would be employed by Aer Lingus, with cabin crew supplied by McGinley Aviation respectively, but would wear Virgin Little Red uniforms and had training from Virgin, despite the fact that airline had not previously operated narrow-body aircraft.
Split into simpler sentences: The pilots would be employed by Aer Lingus, with cabin crew supplied by McGinley Aviation. The cabin crew would wear Virgin Little Red uniforms and had training from Virgin, despite the fact that airline had not previously operated narrow-body aircraft.