Confused about filing addresses for EAD(renewal) and AP(first time).

[Msafiri]

I have a pending I-485 and I am renewing my EAD (not a combo card).
I wanted to include a new AP application this time while renewing my EAD but the filing addresses are different.
Filing address for EAD renewal C9 category is Chicago lockbox. The instructions for filing AP alone after I-485 has been submitted is Dallas lockbox for receipt number beginning with SRC.
Am I supposed to send them to different addresses? The EAD renewal to Chicago and the AP to Dallas?
Am I going to receive a combo card or separate documents?

[Enub4]

Most people received a combo card and renewed a combo card.
If you file separately you will receive different documents.
Do you need to travel? Sometimes AP is faster than EAD renewal.
I guess the only way to get a combo card is to file both forms together, but I suspect, that because it is a renewal, they will not give you a combo card because your previous EAD is not a combo card. But I have no experience and haven't read a case like this before.

What I will do is send the forms separately, with a copy of the I-485 receipt (to avoid the payment).