Was that during the set-up changes or after?
As noted by Sky Italia, very unusual for the large extent of suspension changes during FP for LEC. After his return to track for the last 8 minutes he was doing high 1:19 on softs.
After change to mediums NOR did a high 1:18, Sainz was about a second off. Not sure if track evolution, new tires vs. old or what else to explain NOR time vs Sainz. Pirelli’s Isola saying softs here are worth 1.1 - 1.2 sec over the mediums and is expecting some to start with softs if a 2-stopper.