OK, so it wasn't 100% on the facts and its easy to nitpick bits that we each know well. It is a drama and is limited by the understanding and imagination of the scrip writer (much like a real documentary or news reel).
BUT
Which bit of this show was implausible?
Train collision? Subsequent strike? Total gridlock on the roads? Staff shortages exasperated by said gridlock? People freezing to death in the gridlock? ATCOs in court held up as scapegoats?
Sorry, but that is all too real and mostly seen recently.
So the scenario for the midair wasn't spot on, but make the gridlock due to e.g. sudden, unexpected snow (where have I seen that lately?
). Sudden runway closures for clearance. Gridlock on the roads (because you southern softies can't cope with a sprinkling of snow). ATCOs arriving late (like the next cycle). Others staying on late 'cos they can't get home anyway. Airports turning aircraft away due to limited parking stands. Lots of pressure to move aircraft with few staff and far from ideal conditions. Do none of you f**k up sometimes? Even more so when overloaded?
I think the underlying message in this mockumentary was all too urgent and should be a wake-up call rather than the "head in the sand" mocking shown by most of you here.