A funny film initially attracts fame, including Love Actually (2,1,6,2,4)

I believe the answer is:

as a matter of fact

'actually' is the definition.
('as a matter of fact' can be a synonym of 'actually')

I can't explain the rest of the clue.

(Other definitions for as a matter of fact that I've seen before include "Actually" , "in reality" .)

I've seen this clue in The Independent.

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