We can define 234 either as (23)4 or as 2(34) . Does it make any difference?

Now calculate (Ö(2)Ö(2))Ö(2) and Ö(2)(Ö(2)Ö(2)) and answer the following question for both definitions.

Which number is the biggest
Ö(2)Ö(2)Ö(2)Ö(2)...

where the powers of root 2 go on for ever, or
(Ö(2)Ö(2))Ö(2) ?