Sergio Perez and Esteban Ocon collided during first practice for the Emilia Romagna Grand Prix, with the Red Bull driver stating radio issues were the reason behind the miscommunication between the two drivers. F1 had widespread technical issues with its broadcasting system on Friday, resulting in teams having no radio contact with their drivers. As a result Perez believes the problem, and some bad timing, factored into the two former teammates came together at the Villeneuve chicane. "With the incident this morning, we didn’t have radio so I think there was a miscommunication through there and I think it was just bad timing," Perez stated via a Red Bull press release. As for the rest of Perez's Friday, the Mexican was pleased with his second session as he finished with the sixth fastest time after completing 25 laps. “It was definitely good to get a decent amount of laps in the second session today and to get a feel for the car on a different track," Perez added. "The track conditions are obviously very different here compared to Bahrain so I’m just learning how the car behaves on different tracks. "We’ve learnt a lot today as a team and for every lap I do, I learn a few tricks here and there. The race pace seems to be strong and the car felt good, hopefully we can pull it all together in qualifying tomorrow. "