The combination of travel services offered to you is a package within the meaning of Directive (EU) 2015/2302.U.K.
Therefore, you will benefit from all EU rights applying to packages. Company XY/companies XY will be fully responsible for the proper performance of the package as a whole.
Additionally, as required by law, company XY/companies XY has/have protection in place to refund your payments and, where transport is included in the package, to ensure your repatriation in the event that it becomes/they become insolvent.
More information on key rights under Directive (EU) 2015/2302 (to be provided in the form of a hyperlink).