I want a feel for where things sit in time, and for how much time sits between them.
Each timeline shows the same events twice. The bar is to scale, so you can see how much of history collapses into the right edge. The list below it goes event by event, with the size of each gap written out.
Drag across a bar to zoom into that stretch. Double-click the bar to zoom back out. Open "Scale and tags" under a bar for log scale and tag filters.