Am 07.01.2021 um 21:50 schrieb Brian Revell:
 I have a different but similar problem where 2 series appear to be
 recursively linked  Yt=f(Xt ...) ; Xt=g(Yt-1....) .  How to generate
 dynamic roll-forward forecasts from the two separate equations when both
 Tt and Xt are of interest. 
Need to specify a (bivariate) system.
-s