Along the way (2,5)
I believe the answer is:
en route
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">along the way</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for en route that I've seen before include "On the way - in France" , "In transit (French)" , "While travelling" , "on the road" , "'On the way (2,5)'" .)