MS Access API's

I am already using the MailChimp (MC) API’s to sync MS Access and MC.

I have 2 Questions:-
1) If I run MC via WordPress (WP), can I still use the MS Access API’s and would I set it up in same way?
2)I am looking at using the Connections plugin in WP. Can MC use the Connections Membership tables for campaign purposes?

I look forward to your response

https://www.ads-software.com/plugins/mailchimp-for-wp/