Imma be so amused if few chapters down, even their friends felt something was up between the two and it would be Ayano casually asking Kanon, "So how's things with Kindaichi-san?" and Kanon be like "Eh? Ehhhh?? EEEEEEEEH?!!????"
At this point I'm pretty sure Rinne and the teacher already knew from Kanon's perspective.
And Saki's mom at least from her perspective.
I just think Kanon's experience with other people about her feelings towards Saki would be somewhat friendlier? Saki's flashback from her middle school thing does implied some sort of trauma, but likely it only just within a selected circle that her mom doesnt seem to be informed about