Is it worth defining helper methods on models that traverse relationship chains?

I have a nested relationship chain in my app: WorkoutSession → Microcycle → Mesocycle → Macrocycle → User → actualTrainer.

I defined a helper method on the Microcycle model called actualTrainer() that traverses this chain internally:

public function actualTrainer() { return $this->mesocycle->macrocycle->user->actualTrainer()->first(); }

My question is: if I eager load all the relationships beforehand with load('mesocycle.macrocycle.user.actualTrainer'), will calling this helper method still use the already loaded relationships from memory? Or will it fire additional queries because it's traversing the chain through its own internal logic?

And more generally, does it make sense to define these kinds of helper methods on models when the relationships are this deeply nested, or is it better to always traverse the chain directly and rely on eager loading?

Thanks