Wales' Six Nations match with England on Saturday will be played in open-air, after the away side made a decision to play the match without the use of the Principality Stadium roof.
They were facing the first loss of Eddie Jones' reign as Wales led by two points with four minutes left but Daly finished off after a poor Jonathan Davies clearance and Owen Farrell converted to see England home.
England were sharper in broken play and, even though they trailed throughout the second half, they were always within a converted try of a winning score.
It has represented a remarkable effort under England's Australian head coach Eddie Jones, with Wales their latest victims after what was a compelling and brutally intense encounter.
England women scored 11 tries as they cruised to a 63-0 bonus-point win over Wales in the 2017 Six Nations at Cardiff Arms Park.
Whereas Wales were once arguably the fittest team in Europe, Jones believes that title now belongs to England.
"Mako will play for his club this week and if he gets through that game okay we will bring him into camp for the Italy week".
It could provide a glimpse into England's long-term future and Jones added: "I want to play differently against them, experiment a bit in how we play and maybe the team might be different".
Dan Biggar was a doubt for the match because of a rib injury but there was no sign of any discomfort as the forceful Wales fly-half emptied the tanks at the Principality Stadium.
"But we've got to win against Italy to win the Six Nations".
"At stages I thought we were going to fade out of the game, but we hung in there making tackles".
"But we'll take that, we'll bottle it and we'll use it in two weeks time when we go to Murrayfield".
The Welsh had led 13-8 at half time thanks to two penalties from Leigh Halfpenny and a try from Liam Williams.
Wales coach Rob Howley agreed.
"The intensity and application of our players for 75 minutes was outstanding", he said.
Jones insisted he has been psychologically "cuddling" his England players in anticipation of the renewal of a special rivalry. "We put a lot of emotional energy into that game and to come away with the win is a massive performance for us".
"Unfortunately those moments [in] which we needed to execute under pressure, we didn't and as a result they've scored with three minutes to go".
"That was an absolutely pulsating test match and an example of Six Nations rugby at its very best", former British and Irish Lions coach Ian McGeechan said.