England led 10-3 at the break, only to see Cory Hill score Wales’ first try in the 67th minute after 34 phases — the conversion made it 16-13 — and Josh Adams add a spectacular second in the 78th to put the visitors away.
Replacement Dan Biggar was the provider both times, once through a pass and setting up Adams with a lofted kick. Adams then out-jumped Elliot Daly and crossed the line to spark euphoria among the home supporters.
“We created a lot of problems for ourselves in the first half with our turnovers,” Gatland said. “We were much better in the second half and got stronger as the game went on.
“Our aerial game was really good and in the second half, tactically we were really good.”
Did England — which conceded nine penalties to Wales’ three — lose discipline in the second half?
England fly-half Owen Farrell, who struck two penalties and converted Tom Curry’s try, didn’t think so.
“We didn’t really get a foothold in the last 30 minutes of the game,” Farrell, the tournament’s leading scorer with 37 points, said in a televised interview. “We didn’t lose our discipline. We made a few errors, myself included in that.
“We couldn’t really get out of our half. We made a few mistakes and had a few calls go against us. There’s a big chunk of the last part of that game where we didn’t do what we could.”
“We’d probably like to play again next week to try to maintain momentum,” said Welsh captain Alun Wyn Jones. “Having a week off is a dangerous thing. I’m sure Scotland will be licking their wounds and looking forward to us going up there.”