Both Sasori and Deidara were later revived by Kabuto as part of his army for the Fourth Shinobi War and assigned to the Surprise Attack and Platoon Division.
They almost immediately began arguing about art again, which culminates in Sasori threatening to kill Deidara and Deidara asserting they were already dead.
He was unaware that Sasori chose to let Chiyo kill him with her puppets.
Deidara would later also die suicidally, exploding himself in a last ditch effort to kill Sasuke.
This pairing is sometimes, although not often, called Dei Saso (Japanese デイサソ Dei Saso).
Ironically Sasori likes to end his fights quickly and hated waiting, while Deidara liked to take his time when fighting his opponents.
Sasori died in his battle against Chiyo and Sakura, something that Deidara was surprised by though he commented it was an artistic way to go.
The idea was later brought up again in connection with the 1996 TV Movie, but nothing came of it there either. Fans would come up with detailed and elaborate theories or plots during summer hiatuses, most of which got completely thrown out within three episodes of the new season.
May lead to Fanon Discontinuity when disgruntled fans prefer their own fanon over the canon.