Assume an event similar to the title, that a player using Barathrum attacks someone juggled by Kunkka's first ability and procs a Greater Bash while the target is mid-air. The result is the target being pushed while mid-air and stays in the same elevation until the stun duration stops (e.g. if Greater Bash proc'd at Torrent's peak, the target will stay at that elevation for an amount of time depending on lvl of Greater Bash).