Keeping this a little vague (because I need to know if I should follow this up)
If you handed your laptop
(but not charger) to a Repair Company to fix, and they sent it away for you under warranty to the manufacturer and the device was declared beyond economic repair. Manufacturer send out an equivalent laptop that is the same spec or higher, but different model. Repair Company sets up the new laptop for you and hands the new device to you without the charger. (Both devices use the same rated charger)
Would you expect Repair Company to give you the replacement charger that was in the box? Or is it okay for Repair Company to keep the new charger for their own as you still have your original charger that works perfectly with your new laptop?