It probably isn’t fair given how well Milwaukee has played this season, but some league insiders questioned the Bucks’ championship potential after their late-game execution in Sunday’s loss to the Rockets. One scout is particularly dialed in on how Milwaukee’s defensive scheme — hyperfocused on walling off the paint and allowing teams to fire away from 3 — will work deep in the postseason. “I’m interested to see if the way they play defense [holds up],” the scout said. “The further they can get, and play good teams that can actually shoot — will it come back to bite them?”