Integrating WordPress with Your Website (Multisite?)

https://codex.www.ads-software.com/Integrating_WordPress_with_Your_Website

I need to revisit an old problem that to my knowledge has never been resolved… the original forum post for context.
https://www.ads-software.com/support/topic/integrating-wordpress-with-your-website-is-this-possible-with-multisite?replies=6

I am trying to integrate wordpress content into a non-wordpress site. The kicker is that I am using multisite and the original directions are for single installs only. Can anyone help? I have tried all known permutations of code used to switch_to_blog and load but the loop fails to load. To some extent this has become a challenge, I have tried off and on for months to get this working and have yet even get an error message.

Thanks in advance!