information yet but its mood will have incorporated everything from the future to estimate the state at time 0 will not be pronounced at all at the very end is at the very end of your time sequence the smoother and the filter uses the exact same information and they should have the same estimate otherwise something funny going on I mean maybe some numerical things going on but overall they should have the same estimate because they use exact same information to get the estimate at the last time slice in between you can think