Hello @Romain_Forestier,
Those things are basic in Make.
That’s why I suggest you go to that Make Academy course.
Every webhook only has their set of data. for example, if you pass route 1: data(above mentioned) then only these data can be processed for that call. It can’t able to use/fetch/handle other webhooks data(like route 2).
If you need to use both of the data then pass it on a single call of webhook and then separate it using function or modules.
If the structure of webhook data is not fixed(multiple sets of data) then ⇒parse it ⇒Iterate it and use it in the next modules.
Without knowing the basics, if you go deeper then you get more confused.