Elton Laleham Indeed. But, Ronnie mentions Luke in the video, and Ronnie himself(along with the rest) had passed away. Thus, a response TO Ronnie ABOUT Luke. And, note, I said 'you all'. Which would then be more than just the two of them, or I'd said 'you both'.
***** The thing is Luke as we know is mentioned Ciaran is seen in pictures but not mentioned neither is Bob Lynch mentioned either or Jim McCann who replaced Ronnie for 5 years in the 70s from 1974 t0 1979 when Ronnie returned to the Dubliners