Is it possible to have an Apache .htacces file chide index.fcgi in the url

Question

My hosting provider just announced that they are dropping support for Passenger/WSGI. I have a flask app that has been running for a while. The basic structure was:

host_login_dir/
    virtualHostBase/
        passenger.py
        Public/
            all the flask app stuff...

Now, as far as I know that changes to:

host_login_dir/
    virtualHostBase/
        Public/
            index.fcgi
            all the flask app stuff...

My question is about the observed URLs between the Passenger version and the FastCGI version. With Passenger, the default URL was:

https://my.company.com/

The FastCGI URL is

https://my.company.com/index.fcgi

I only have access to .htaccess files. Is there a way to "hide" index.fcgi in the URL and otherwise have the app URLs function as They used to?

I have seen: Hiding fcgi script file name from url in django app hosted with fastcgi and apache and that does hide the script if it is not specified in the URL but If I go to some other app link the script name appears, a la: start at:

https://my.company.com/

click a link that takes me to the "Past Event" view and the URL changes to:

https://my.company.com/index.fcgi/Past

Edit I am using the .htaccess directives from the link above. They are:

<IfModule mod_fcgid.c>
   AddHandler fcgid-script .fcgi
   <Files ~ (\.fcgi)>
       SetHandler fcgid-script
       Options +FollowSymLinks +ExecCGI
   </Files>
</IfModule>

<IfModule mod_rewrite.c>
   Options +FollowSymlinks
   RewriteEngine On
   RewriteBase /
   RewriteCond %{REQUEST_FILENAME} !-f
   RewriteRule ^(.*)$ index.fcgi/$1 [QSA,L]
</IfModule>