Routine bureaucratic approach with a potentially explosive package? (3,7)

'routine bureaucratic approach' is the definition.

'a potentially explosive package?' is the wordplay.
I cannot quite see how this works, but
'package?' could be 'box' ('box' can be a synonym of 'package') and 'box' is found in the answer.
The remaining letters 'ticking' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

'with' acts as a link.