Pilots and air traffic controllers have been helping England's top referees.
Two pilots spoke at a Professional Game Match Officials Ltd (PGMOL) training camp last month.
They offered their insight into the best method of communication in a stressful situation where multiple voices are having an input.
A previous visit last year from air traffic control staff, prior to Webb taking on his role at PGMOL in December 2022, was arranged for the same reason.
- Webb says video officials must challenge on-field referees more
- Carragher says situation surrounding VAR 'at crisis point'
- Almost two-thirds of fans oppose VAR in English football
Webb has been on the back foot following a number of VAR controversies this season.