Oh ya, I’m also guessing the gate netlist, SDF and SPEF in runs/<RUN>/results/final are the ones to use. But I must be doing something wrong in the script template above as I get many warnings of the form “Warning: example1.sdf line $L, instance $I not found”, report_annotated_delay is showing me only like half of the cell and internal arcs are annotated, and report_dcalc doesn’t print anything, which I believe is consistent with missing timing arcs.

Sharing test case will help and easy to debug.

In case it helps: I'm not sure, but to and from refer to start- and endpoints (FF, inputs, outputs, but not internal nets), so it might be useful to use -through and extract the section you are interested in from any of the setup or hold time timing reports. (This is at least how I do it with my clock generator).