The trouble with that rationalisation is exactly what was pointed out though - you agree that he is implying that the Irish border is similar to the Scottish border, i.e. within the same political state, which clearly the Republic of Ireland is not.
Not being a mind reader, it is difficult to know what David Davies was thinking about.
However several posters here have delberately chosen to take unlikely worst possible
interpretations, rather than more reasonably argue his answers were poorly worded.
I take the view that David Davies is well aware of the history and current politics,
and does not want to see a return to hard borders with rasor wire fences, and
queues of cars and lorries building up in either of the islands of Britain or Ireland.
Are you sure about that? We already had a referendum where what "people in the UK" thought was shown to be decidedly lacking.
Yes, I am quite sure about that.
The fact that the majority of the UK voters decided that we should return to
self government rather than continue on the road to a single European state
does not mean that we think the sun shines out of the arses of the Tories.