Two iphones, two different phone numbers, same apple id, will imessages work?

Question

I have two different iphones on a family plan with verizon, phones A and B.  Each is associated with a uniqie Apple id, lets call those apple IDs C and D.  So Phone A has apple id C, Phone B has apple id D.  I'd like to register both phones to Apple ID C for in imessages, although the phone numbers themselves will continue to separately be registered to Apple ID C and D.  Once i do that, presumably all imessages sent to same apple id C's email address will appear on phones A and B.  But will imessages sent to phone B's phone number also appear on phone A, or will those only appear on Phone B?
Many thanks.

Answer 1

MacMost Now 653: Setting Up Multiple iOS Devices For Messages and FaceTime
Yuu can also
Create a NEW account/ID for her using these instructions. Make sure you follow the instructions. Many do not and if you do not you will not get the None option. You must use an email address that you have not used with Apple before. Make sure you specify a birthdate that results in being at least 13 years old
  Creating an iTunes Store, App Store, iBookstore, and Mac App Store account without a credit card
More details of how:
http://ipadhelp.com/ipad-help-tips-tricks/how-to-get-free-apps-from-the-app-stor e-without-a-credit-card/
Use the new ID on her iPod but only for:
Settings>Messages>Send and Receive
Settings>FaceTime
Settings>GameCenter
and Settings>iCloud if you want her to have separate Contacts Calendar and some other things.   
Continue to use the same/common Apple ID for Settings>iTunes and App stores so you can share purchases.