Can you jump to individual silence spots within a recording - say TAB jumping somehow? Can you find out the number of silence markers before exporting?
No you can’t jump to silences, but if you mark silences with labels, then you can tab from one label to the next. Unfortunately tabbing between labels is partially broken in the current version of Audacity, but works correctly in Audacity 3.0.4 or earlier. The bug is logged here: https://github.com/audacity/audacity/issues/1767
I wrote a Nyquist plug-in called “LabelSummary.ny” which, as the name suggests, displays a summary of how many labels in each track. The plug-in is available from my blog: https://audionyq.com/label-track-info/
Instructions for installing and enabling Nyquist plug-ins are here: https://manual.audacityteam.org/man/installing_effect_generator_and_analyzer_plug_ins_on_windows.html#nyquist_install