If an analyst has added a notable event to an investigation, how does another analyst open that notable event to review it? There does not seem to be an option to view the raw event referenced in the timeline or jump to the all the notable events for an investigation. The same goes for Splunk Events.
There is no way to do that in the latest version, unfortunately. You can view only notable events or splunk events on an investigation by filtering on a type: of notable event or splunk event.
In the latest release, however, there is no way to click through to the raw events from the investigation timeline.