Both teams were undeniably relieved that this fixture didn't have to go to a replay like so many other of this gameweek's FA Cup ties.
Glenn Murray's scrappy goal three minutes from time decided the game, after Bakary Sako's equaliser had cancelled out Dale Stephens' first-half strike, and deservedly sent the Seagulls through to the Fourth Round.
Although the VAR baptism derby was slightly anti-climatic, there was still a lot to be learnt about both sides going forward this season...
4. Izzy Brown Can't Catch A Break
He limped off injured minutes into the game against Palace with what looks to be a nasty knee injury after only recently recovering from his previous setback, in what was a terrible late birthday present for the newly turned 21-year-old.
3. Roy Hodgson Can't Catch A Break Either
Roy Hodgson described the injury crisis at Palace at the moment as the "worst he can remember in his career" - which is rather long and says a lot...
He left the Amex Stadium with Jeffrey Schlupp and Andros Townsend on crutches, which will only make his team selection that much harder as he aims to guide Palace further away from the relegation zone.
Hodgson also stressed how this has made the January transfer window all the more crucial to the club's survival, and how these first-team players need to be replaced if they are to stay up.
2. Bakary Sako's Resurgence Continues to Surprise
If you told a Palace fan at the start of the season that Bakary Sako would be starting up top against their biggest rivals they'd probably cry...
However, the Malian has started to find some form, after his career at Palace was seemingly coming to an end, scoring in every one of his last three cup games.
Sako scored a screamer in off the post with his weak foot to draw the Eagles level in the 69th minute and he could prove vital on the opposite wing to Wilfried Zaha with Townsend now injured.
1. Brighton Have Unexpected Strength in Depth
Many wondered whether Brighton had enough to compete in the Premier League at the start of the season, with a squad still largely consisting of Championship standard players.
However, they have surprised and proved on Monday night that it's not just the first team regulars that can step up to the plate.
Matty Ryan, Shane Duffy, Lewis Dunk, Davy Propper, Pascal Gross, Anthony Knockaert and Glenn Murray were all rested from the start, but Connor Goldson, Beram Kayal and Solly March all put in fantastic shifts and stated their claim for a spot in the starting eleven.
Chris Hughton will be overjoyed with the selection headache and competition for places.