Hola Inma,
The sentence below appears to have the incorrect emphases; it appears as an example of desde que being used in the subjunctive, with something that will happen in the future. That said, I think you could retain the existing emphases as well because if I understand the lesson correctly, the subjunctive would also apply to hasta que.
Mañana, desde que aterrices hasta que llegues al hotel habrán pasado un par de horas.
Saludos. John