another option...
the scene after the opener involves a classroom scene, possibly a stop over at indy's house (???)... likely exposition... or perhaps two days of events instead of it being super brief?
there's also a train scene at the bedford (essex) train station. we know that mutt with his bike and indy are both present. they likely board the train together... either that or its an end scene. more than likely it's a train scene to get to another location instead of an airport scene. perhaps they take the train on their 'american adventure'. getting from connecticut to a mexican airport involves land travel... could include trains and planes.
if you'll note, this film so far seems to take place entirely in the americas... north america and possibly central or south america. last crusade was mostly in europe with a little side of western asia, temple was all in the far east and raiders was mostly in northern africa. the only archaeological civilization continents that we really haven't touched in a main adventure are the americas. we got a bitty taste of "peru", but that was only a teaser. it seems like they really are trying to cover each of the vastly different areas of the globe to give variety... just like each film deals with a different religion (so far--judaism, hinduism and christianity).
what we do know is that harrison has a wardrobe change or there's two days of events in bedford.
we also know that shia goes from a white t-shirt in bedford to a gray/navy t-shirt everywhere else. at some point hurt's character (abner?) and indy are in suspenders/bowties and shia is in dressed-up '50s wear (wide-legged high-waisted pants, wide short tie, etc...). we also know that hurt shaves off a considerable amount of facial hair at some point in the story.
