DB has two classes: Second Class and First Class.
Eurostar has three classes: Business Premier, Standard Premier, and Standard.
DB sells tickets that include Eurostar travel.
A DB second class ticket including Eurostar travel corresponds to Standard class on the Eurostar.
What Eurostar class does the Eurostar component of a DB first class ticket including Eurostar travel correspond to? Business Premier or Standard Premier?
Although the seats are the same between Business Premier and Standard Premier, the Business Premier ticket comes with (better/more) food and lounge access, among other things. The DB ticket says checkin 45 minutes in advance, but Eurostar Business Premier says the traveller can breeze through just ten minutes before departure.
Does it make any difference whether the DB ticket is regular or Sparpreis?