Relationship with extra column

I have the following models:

Player: id, external_id, is_emulated, ...

Ban: id, external_id, is_emulated, ...

I tried to append the query with the following code:

public function playerRelation(): BelongsTo
{
    return $this->belongsTo(Player::class, 'external_id', 'external_id', fn ($q) => $q->whereColumn('players.is_emulated', 'bans.is_emulated'));
}

It's not working. Nothing changes. If the db has the following records:

Players: 1, "abc", false 2, "abc", true

Bans: 1, "abc", true

The relation finds the 1. player record.

Is it possible to append that query somehow or how do I achieve this relation?