Operating daily? Hypothetically (2,5)
I believe the answer is:
on paper
'hypothetically' is the definition.
(I've seen this before)
'operating daily?' is the wordplay.
'operating' becomes 'on' (I've seen this in other clues).
'daily?' becomes 'paper' (newspaper).
'on'+'paper'='ON PAPER'
(Other definitions for on paper that I've seen before include "Exam may be" , "Theoretical" , "Where one might write" , "As written - in theory" , "Propane (anag.)" .)