Yet, iMovie is unable to join two clips!
It seems to be a common and recurring issue to which I am seeking an answer once and for all.
I have split a clip into 3 pieces and deleted the middle part. Now, having used CMD to select the two remaining pieces - highlighting them in yellow borders, I go up to the Modify menu to find that the Join Clips option is unavailable (greyed out).
Why am I not able to join the clips? They are adjacent to one another, have no speed alteration (e.g. slow motion) and are both highlighted. How do I join them?