If you adopt the FBI flight path, Rataczak's point of view (POV) changes as 305 approaches the Columbia/Portland. A different flight path will show a different configuration of Rat's POV in time.
R2 believes that Rat's observation had to have been "prior" to 305 crossing the Columbia because it was just north of Portland that R2 began communicating with 305 and the military in order to set both planes up for an intercept south of Portland near Lake Oswego. 305 and the T33 achieved their rendezvous! If this is true, and R2 believes it is, then all of the events involving oscillations, bump, and Cooper leaving had to occur before the crew got busy communicating with R2 just north of Portland in order to set up his T33 intercept just below Portland minutes later. This T33 intercept draws a time line in the sand. If we had the transcript of ALL communications the events Rataczak and Anderson describe could be narrowed further.
The T33 incidentally, launched from the Ntl Guard base at Portland Airport and was in the air flying a holding pattern waiting prior to 305 crossing the Columbia. Once 305 crossed the Columbia just west of Portland, the T33 turned and flew to its rendezvous point with 305 at Lake Oswego. This places constraints on where and when 305 was in terms of all prior events already expired. This incidentally is one argument against people who claim Cooper bailed over Oregon or later; these people never enter the T33 rendezvous into their calculations, which is a proven fact!
