W open 1NT

When They Compete Against Our Opening 1NT

Over Opening 2NT or 2C 2D 2NT

I assume we want to play the same system over both of these, just for the sake of memory, and that there would be a slight preference for making it like 1NT.

When we Overcall No Trump

We play "all gadgets on" (AGO) for 1NT and 2NT overcalls, including 1NT in the balancing seat (1x - P - P - 1NT). However, the transfer to the opponent's suit shows 4-4-4-1 with a singleton in the opponent's suit.