No, it's not clear, and I guess that's up to the courts to decide.
But in my (non-lawyer) opinion - if the reproduced code is substantial/unique enough to be deemed to be covered by the license, then it's also substantial/unique enough to be subject to that license requirement.
But in my (non-lawyer) opinion - if the reproduced code is substantial/unique enough to be deemed to be covered by the license, then it's also substantial/unique enough to be subject to that license requirement.