Thanks for the update.
In timeline mode, clicking the date will navigate to Agenda view. It is default behavior. Consider there are more than 20 events in the same range and TimelineWeek will display only few events (based on its height) with more popup indicator icon for others. In that case, navigating to TimelineDay view by date click will also show the same TimelineWeek output (with more popup indicator icon), for this case only we navigated to Agenda view for timeline mode.