I had to reread as well. The 'as' separates the events. ( but how else can I get hot terms like SpaceX, Google, NASA, Musk and Profitable in a title!) think '

I had to reread as well. The 'as' separates the events. ( but how else can I get hot terms like SpaceX, Google, NASA, Musk and Profitable in a title!) think 'John types on the keyboard at his house as Jeff arrives to work'