When you create a new event, the timeline gets populated with (a) new event created, (b) event cover picture updated and (c) event picture updated.
(b) and (c) are not needed when it's first created (and also technically wrong - they haven't been 'updated' - they were first added during event creation.
Is it possible to consider only showing the fact that the event in created on the timeline? Obviously the 'updated' pictures are still relevant if they are subsequently updated.