What does dynamically track refer to?
Something different than the Weekly Stats under the Planner tab?
I have been following Xert recommendations now for 100+ days of indoor riding and have accumulated plenty of hours below LTP.
See this post for my tabulated values across all zones (below Tempo = <LTP) –
Sweet spot question - Support - Xert Community Forum (xertonline.com)
I also consider LTP as a ceiling, not a target especially riding outdoors which I hope to be doing soon. 