NJ Transit Train 3846 & Amtrak MOW Light Engine Move at Hamilton

NJ Transit Train 3846 to New York departs the station at Hamilton with Cab Car 7000 leading the way & ALP-46 4608 on the end. An Amtrak MOW Light Engine move consisting of two GP15D's (578 & 579) then passes through shortly afterwards heading for Adams Yard in North Brunswick. 3846 was arriving here as I was answering messages on my phone 📱 so I could only catch it leaving. Another northbound train came minutes later & I was caught completely by surprise.