How to return related objects a queryset’s values_list instead of just the PKs

Is there a way to neatly return a queryset’s values_list of related objects from many objects’ related managers at the same time without having to write a loop ?

In other words this query:

Hospital.objects.first().treatments.all().values_list('treatment_appointments', flat=True)

will return me a list of PKs that will look something like this:

<QuerySet [1, 32, 35, 21, 30, 28, 29, 13, 56, 58, 59, 60, 61, 66, 67, 87]>

Is it possible to write such query that will return the actual objects instead of those PKs?

here are the models:

class Treatment(models.Model):
    name=models.TextField()

class Hospital(models.Model):
    treatments = models.ManyToManyField(Treatment, related_name='treatments')
    

class Appointment(models.Model):
    treatment = models.ForeignKey(Treatment, related_name='appointment_treatments')

Answer

You can filter with:

hospital = Hospital.objects.first()
Appointment.objects.filter(treament__hispital=hospital)