Use the terminologies in oil and gas, a parter with teva will be like amrn doing upstream (api supply) and downstream (marketing both and brand sale) and teva doing midstream, aka distribution.
Same time, many including JT can keep their BP dream, continue to build pipeline, such as V 2.0, NASH, etc.
The best beauty of this business approach is the life goes well beyond 2029. It is not entirely impossible to recoup all the loss back or even more.