Wait for battle

Is it true that the longer u have to wait for a battle(max. 30 seconds) the opponent will be a stronger one then when u get one after for example 3 seconds?

That’s a good question.
I always assumed it started at your strength and then slowly scanned up AND down the ranks so at 30 seconds you would get a max weak or max strong opponent.
Anyone?

I thought that, too. I just assumed that if it took longer to matchmake, the computer gets “desperate” and puts you with an opponent with a larger strength difference.