htaccess conflict

I am running WP5.2.2 on Apache, from my domain root. I also have Nextcloud running in mydomain/cloud and I’m having trouble with .htaccess rules. Nextcloud requires some rewrite rules in order to make DAV services discovery work, but if I put them in the same .htaccess file with WP rules, then WP URLs break.

Is there any way to combine all the rules and make NC + WP coexist peacefully?

My WP rules:

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

My sabreDAV “well-known” URLs

<IfModule mod_rewrite.c>
  RewriteEngine on
  RewriteRule ^\.well-known/host-meta /cloud/public.php?service=host-meta [QSA,L]
  RewriteRule ^\.well-known/host-meta\.json /cloud/public.php?service=host-meta-json [QSA,L]
  RewriteRule ^\.well-known/webfinger /cloud/public.php?service=webfinger [QSA,L]
  RewriteRule ^\.well-known/carddav /cloud/remote.php/dav/ [R=301,L]
  RewriteRule ^\.well-known/caldav /cloud/remote.php/dav/ [R=301,L]
</IfModule>

docs:
https://docs.nextcloud.com/server/16/admin_manual/issues/general_troubleshooting.html#service-discovery
https://sabre.io/dav/service-discovery/