@safari Unless you were using a navigation route with waypoints, you were actually looking at Climb Guidance v1.
See details here: https://www.suunto.com/sports/News-Articles-container-page/suuntos-climb-guidance-prepares-you-for-the-terrain-ahead/
The numbers on the screen should be pretty self-explanatory when you use them on a steep terrain - just looking at how these numbers change makes it clear what they mean. But basically it shows the remaining distance of the shown elevation profile, and, depending on the mode, the ascent and the descent, and/or the remaining ascent - all relevant to the shown part of the elevation profile.
In the case of Climb Guidance v2, breaking of the end-to-end elevation profile into “segments” is done based not on individual climbs and descents but bases on where waypoints are on the route. The v2 mode is only useful in a context of a long endurance event with check points or aid stations.