Captain Caolin Blade said that Connacht have "no one to blame but ourselves" following their last-gasp defeat to Leinster.
The Westerners led 22-19 in the last minute but a crooked lineout handed the visitors a last chance to strike and Ciarán Frawley scored the winning try in the corner.
"We're extremely disappointed, we'll have to look back on it," player of the match Blade told RTÉ Sport after the 24-22 defeat.
"Too many times in that second half we just stood off. We let them play their game, they are a top-quality side but we're extremely disappointed."
Both teams struggled for periods in the freezing conditions but Connacht's lineout failed to fire, not just at the end, but on a number of occasions in the opposition 22.
"There was a few mistakes on our side and we've no one to blame but ourselves. We've two huge games coming up in the Champions Cup [against Bordeaux and Saracens] so we'll be disappointed but we'll have to move on," added Blade.
The hosts led at the break but a quick-fire double gave Leinster a 19-8 advantage midway through the second half.
However, Connacht hit back with two tries, including one from Blade, before the killer score at the death.
"There's highs and lows, we're probably just too inconsistent in the second half," the scrum-half said.
"We played some really good rugby, we'll take a lot of learnings but fair play to Leinster, they are a top-quality side."
Leinster move to the top of the table after the bonus-point win but will have plenty to work on ahead of next weekend's trip to La Rochelle in the Champions Cup.
Head coach Leo Cullen said they saved their best till last.
FT Connacht 22-24 Leinster
— RTÉ Sport (@RTEsport) December 2, 2023
Heartache for Connacht as Ciarán Frawley wins it for the visitors at the death #RTErugby pic.twitter.com/SPGHG2kCsO
"That's our best passage of attacking play in the whole game," said Cullen of the winning score.
"Much more accurate with our passing, distribution, people nominating nice and early so we’re presenting a dangerous shape, people working hard off the ball, bit more accurate around the contact area as well and that’s what you can produce.
"So really pleasing when guys are under fatigue and you’re able to deliver like that at the end.
"Before that, go back to the start, Connacht get their try which stems from our missed lineout and there were a few of them in the first 20 minutes.
"We had some period of pressure when we were up on their try-line and they were at 8-0 for quite a while against us. Eventually Charlie [Ngatai] gets over but there was a lot of huffing and puffing before that.
Connacht very strong defensively even though we’d a ton of possession and territory down there end.
"Second half we were a lot better, particularly that first half of the second half. We were a lot more dominant in terms of our carries, contacts."
