XML Google Maps – getting kmz file to automatically play flyover

I hope someone can help. I have created a tour in Google Earth and have saved this as a kmz file. I have emailed this kmz file to a couple of people and can confirm that when they click on the file, it automatically opens Google Earth and commences the tour.

I have tried embedded the kmz file in my website using the XML Google Maps plugin. The page can be seen below:

https://www.svp100.co.uk/test-2/

However, the kml file takes Google Earth to the start point of the tour, but the tour does not automatically play and there does not appear to be a way of getting it to play.

Does anyone have any ideas about how to resolve this, or what I’m doing wrong?

Many thanks in advance!