What would your approach be for a locally advanced head and neck cancer diagnosed concurrently with a mid-esophageal cancer?

In the handful of similar cases that I have seen, I have worked with medical oncology to tease out a concurrent chemotherapy regimen. What we have often ended up doing is treating the head and neck cancer as normal (to 70 Gy) and the esophagus cancer to a relatively standard dose (usually to 50 Gy t...