If the speed gap between the overtaking vehicle and the one being overtaken is minimal, will the overtaking distance be shorter?

Explanation
Correct answer: No
No. With a small speed difference the overtaking distance is longer, not shorter. The overtaking vehicle travels at close to the speed of the one being overtaken, so it needs a much greater distance to pass it completely. This makes the manoeuvre longer and more dangerous, especially on a two-way road.