end-game boss fight drop rate problem

Hello Support Team,

I would like to confirm a game mechanic regarding an end-game boss fight involving a summoner and a large summoned creature. If I defeat the summoned creature first and then defeat the summoner, will the drop rates or loot probabilities for the summoner remain unaffected? Or is there any adjustment to the drop rates in this scenario?

Thank you for your clarification.

Best regards,