What do you think it is possible to get access to the same coins with different seeds? Or did I record there stupid stuff?
I am not sure I am understanding you correctly. Are you asking if it's possible to generate the same address with different seed phrases?
If so, no. That's not possible.
Take note that in theory it's possible that you generate the same address with different seed phrases, but that's not practically impossible. Maybe, that's what you have heard of.