On-the-spot and Then and there

On-the-spot adjective - At the scene of action.

Then and there and on-the-spot are semantically related. In some cases you can use "Then and there" instead an adverb phrase "On-the-spot".

On-the-spot and then and there are semantically related. Sometimes you can replace phrase "On-the-spot" with "Then and there", this phrases are similar.