It depends on how the training is done - my guess is that the end of the observation is the time when the client leaves the provider's presence - and it is then that the questions re dx and tx are completed with the interviewer talking with the provider - all of the other parts of the observation do not allow communication between the interviewer and either the provider or the client. So that the time of the observation ending (517b) would be the end of the 'observation' while the time of the 'consult ending' would be when the interviewer has finished consulting with the provider. We've taken this to the designer of the questionnaire and the person who heads the SPA field efforts to get this opinion of which time to use.