The Qatar Airways airplane is 2000 feet (about 610m) higher and moving faster

This video gives an idea of how the TCAS system works. It is thanks to this system that pilots always have information about nearby aircraft.

TCAS (Traffic Collision Avoidance System) is a collision warning system used on board aircraft. The main goal of TCAS is to ensure air traffic safety by preventing the risk of aircraft collisions.

The system identifies other aircraft, their speed, direction, and altitude, and if there is a risk of collision, it issues avoidance commands.