“When we found out who the dancers were, we got so excited. For me, they're dancers that I have been watching for years,” Emma said in the video.
It was at that recording that Lachy and Dana are believed to have met - just four months after he and Emma split.
But they have yet to confirm the rumours of a relationship.
Watkins added the couple parted ways during a very challenging year that saw her undergo several health scares, including surgery for endometriosis and a leukaemia scare.
Speaking to The Daily Telegraph around the time that lachy and Dana's relationship was revealed, Emma spoke about her plans for the future, including kids.
"All of my friends have children but I’m thinking I’ve still got a lot to do," she said.
The dancer and singer also opened up about the fertility challenges she expects to face due to her ongoing battle with endometriosis.
"I would actually have to try quite hard and I know with the endo I probably wouldn’t be able to plan it out anyway."