Problem with CalDAV Transfer for URL Calendar Subscriptions

I added a new Calendar via “New subsricption from link (read only)”

This URL calendar will not get transfered via CalDAV.

This is annoying as on all of my devices I would have to read the Calendar URL.
On my Android Phone I even have to download ICSx5 additional to DAVx5 to have the calendar.

Can I make it so the calendar will get transfered via CalDAV?

You can’t, subscriptions are only exposed as cached calendars to the calendar web app.

Having ICSx⁵ to have the subscription on your phone (as exposed by DAVx⁵) allows you to have more control on the refreshment rate.