Two different Delete-Only Retention Policies for Microsoft Teams chat

I have created two different delete-only retention policies for Microsoft Teams chat.  Four of us use a 90-day deletion policy and the rest of our staff use a 30-day deletion policy.  

My question is: If I am using the 90-day policy and I chat with someone who uses the 30-day policy, will my chats remain visible for 90 days and theirs for 30?  Or will the most restrictive policy take over and delete the chats from both sides after 30 days?