SL block doesn't autoplay in Rise, but does when SCORM is exported to LMS. How can I stop this?

I have a one-slide SL block and I've configured the player settings like this:


This means when I publish in Review 360, and then import into Rise, it appears how I want it. With a still image of my company logo (the cover photo) with a play button superimposed. When the user clicks play, the content on the base layer of my slide plays, including audio.

However, when I export from Rise to LMS, and then upload the SCORM in our LMS of choice (Virtual College/iLearn) and then press Preview, there is no cover page, and the content plays immediately, including audio, which I think is really off-putting for the user. Is there something I need to change in any settings? Or is there a glitch in the LMS preview? I think to be safe, I may need to change the SL project by adding a landing slide of the college logo, and a trigger to then go through to the main slide and start the interactive element, but it feels like this shouldn't be necessary, as I thought I'd set this up already in the player settings.

SL project attached