When having more than one "timing marker pair", e.g. A1/A2 and B1/B2, some of them might overlap.
Had it yesterday, marking a frame like this: A1 on frame start (sync pattern), A2 on frame end. B1 on start of payload (after frame start), B2 on frame end. Now, A2 and B2 were on the same spot, so B2 hides A2.
While one might see this via the absolute time in the annotations tab, a graphical solution would be way better. Esp. when the annotations tab is folded.
Something easy like different color for this marker tag, or even better, two marker tags in 45° angle. Alas, no idea how to handle more than two markers then...