There are several signs that the trio has been doing this for a while, and a few minutes after you appear the two land-bound dancers start to speed up, working towards a climax of some kind.

The multiple piles of petals start to funnel upwards towards the rest of them before the mass breaks into several slender streams. There's a visible corona of Psychic energy building up around the Sigilyph, causing the air to warp around it as it concentrates. The streams of petals spiral around the two dancers as the Lilligant pirouettes towards the center of the impromptu dance floor.

The trainer spins away, striking a pose as the petals rise up into a great column, bearing the Lilligant aloft. As the pillar crests, the Lilligant releases one last burst of petals, scattering them to the four winds. As the pillar collapses, the trainer lies down next to the Lilligant in the resulting flower bed, while the Sigilyph roosts in a nearby tree.

"Great job, you two!"