The important point is that the model does NOT have Tco (clock to output delay), nor any way to derive it. We get Tco from the driver data sheet. Then we add the Tprop (compensated flight time) to Tco in our timing margin calculation for a common-clock bus. This particular technote explains why it is generally not necessary to calculate compensated flight time in DDR data-to-strobe timing. The DDR timing is not common clock, but relative, sometimes called source synchronous.
There is a more general and detailed discussion of compensated flight time in technote MG82617.