Coming or approach (6)
I believe the answer is:
advent
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">coming</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(advent is the arrival or coming of something)</span><br/ ><br/ >'<span class="explanation-format__original">approach</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for advent that I've seen before include "appearance" , "Run-up to Christmas" , "Season for a candle?" , "when the Church year begins" , "sort of calendar" .)