heos

If you ha these terms the debt would be for 30 months. Quite clear from IFRS 16, only the amount which you are contractually obligated to pay is debt.

More or less. Big difference is that 10 years leasing would still be less debt/asset than owning (cars being a prime exampel with leasing usually being for 3 years at a time, obviously a smaller asset/debt than buying the same car).