How would you treat a synchronous oropharyngeal cancer and proximal esophageal cancer?

After Dr. @Dr. First Last has set the tone for definitive chemo-RT that I totally agree, I would like to offer some additional thoughts:

• It is assumed that both synchronous primaries are anatomically separate and have been proven histologically distinct; e.g. the oropharyngeal primary being a SqCC ...

Definitive RT and chemo.