Optimizing Double Bagger production line in SAP APO

Hi guys! I´m in the middle of an APO Implementation and we are having a particular issue that we found a little tricky.

This is the situation: We have many production lines that makes two different products at the same time (One common entry - two packing lines at the end). In ECC we have one Line Code for each packing Line.

For example:

LINE 1A IS PRODUCING SKU A

LINE 1B IS PRODUCING SKU B

PRODUCT A AND PRODUCT B MUST BE FROM THE SAME FAMILY (they are different counts of the same product)

The question is: How can I use PPDS Optimizer considering that Line 1A and Line 1B are not totally independent?

Any help or idea you can bring to this board will be really preciated!

Thank you in advance!