Sorry if this has reached you too late. Since both of your URLs are on
the same eTLD+1 (allianz-assistance.es), you could use a session cookie
to persist info and make it accessible from any URL that is a sub domain
of allianz-assistance.es. You could do this in straight JS or you could
use the SDI Toolkit's cookie setter action. See
https://techdocs.searchdiscovery.com/adobe-solutions/adobe-launch/launch-extensions/sdi-toolkit/actions/cookie-setter
Cheers, -Stew