They did the finale of 2 night’s shows in Newington before it was announced, they skated separately in the show but just did a short bit together at the end (the video Marbri linked). We also watched them training together for a while that same week (it hadn’t yet been announced although the decision had been made by then). Toeloopy (RIP

) also saw them practice their OD when she went to do a piece on them for Blades on Ice.
ETA: they were also booked to do the Celebration on Ice tour in Canada later that year but split before it when Naomi said she would come back, so Shae-Lynn did those shows solo.