In Group Lift feature requirements, what must occur at the time of lifted skater exchange?

The requirement for the lifted skater exchange in a Group Lift is that the exchange must happen without touching down. This means that at the moment one skater is lifted and the other skater takes their place, there should be a seamless transition where both skaters remain airborne for the duration of the exchange. This ensures that the choreography maintains its fluidity and demonstrates the skill of the skaters, highlighting their ability to work together without interruption. This requirement is crucial for maintaining the overall aesthetic and technical integrity of the lift, as a successful exchange without any touching down is a sign of high-level coordination and control among the team members.