Can two different plans coexist?

Hi guys!

I have the All Apps plan and yesterday I bought an External Hard Drive that comes with the Photography Plan; it was mandatory to accept the offer in order for me to use the Hard Drive, now I see both plans on my profile and I was wondering if this might cause some type of error or they can co-exist together?.

My guess is that I am just getting the extra 20 GB of cloud space that the Hard Drive includes with the Photography Plan but I would love to confirm this.

Thanks in advance guys!.