I put in number of multi-season games where net points is 28 or more and get a list that shows Memphis as the only team to do it more than once.

Then I do the same search for single games and get a few more clubs to have a 28 net points game.

It even shows Portland to do it twice in a few days in the same calendar year

Why aren't the other teams listed as having multiple 28 net points games for multi-season searches?

Aren't "single game" searches grouped into "multi-game" searches?