Both provinces were away from home
Connacht and Ulster have both secured Pro 12 wins away from home against Italian opposition.
Connacht were up against Benetton Treviso and secured a 34-19 triumph, picking up a bonus point in the process.
Pat Lam's side scored four tries through Caolin Blade, Finlay Bealham, Craig Ronaldson and Tiernan O'Halloran at Stadio Comunale di Monigo.
Treviso's three tries were scored by Andrea Buondonno, Luca Sperandio and David Odiete.
Meanwhile, Ulster won 40-17 at Zebre to also secure a bonus point in their chase of the Top Four places.
The province scored six tries en route to victory. Chris Henry and Ruan Pienaar provided the platform with two tries early on.
Four more were added in the second half through Stuart Olding, Jacob Stockdale, Robbie Diack and David Busby. They remain fifth in the Pro 12 standings.
Leinster top the table, two points clear of second placed Munster.
Connacht's Bundee Aki ©INPHO/Alfio Guarise
Connacht's Nepia Fox-Matamua offloads to Finlay Bealham ©INPHO/Alfio Guarise
Connacht's Caolin Blade receives his man of the medal from Federico Sette of Diageo ©INPHO/Alfio Guarise
Connacht players pose for a photo after the game ©INPHO/Alfio Guarise
Ulster's Stuart Olding ©INPHO/Matteo Ciambelli
Ulster's Chris Henry with Guglielmo Palazzani of Zebre ©INPHO/Matteo Ciambelli
Ulster celebrate Chris Henry's try ©INPHO/Matteo Ciambelli