DN: Is it possible to have a Standard DN proposal with 12 doctoral candidates, 6 of them with co-supervisors and a double PhD degree, while the other 6 with 50% of time spent in the non-academic sector and only 1 PhD degree?

It is acceptable, but has to be argued very well, in order to demonstrate the added value of such a set-up and show that none of the PhD candidates will be disadvantaged.

However, as there can be challenges with the recruitment procedure, the different training paths and different supervision arrangements, the administrative burden should not be underestimated.