100% linear 32bit workflow, full EV range, 20k resolution. USE UNCOMPRESSED 32bit ORIGINAL FILE FOR THE BEST RESULT.
Color-graded 20k JPG panorama for render background:
https://drive.google.com/drive/folders/1ZccJ5ysBPXO6QDh69k7V_aMmEWKFOD5n
Tutorial on how to set nodes with JPG background panorama:
https://youtu.be/aj0LoQLjgYo

14:50, Summer, sunny, clouds. Grass field on the outskirts of a village. Few farm buildings are visible in the distance. Trees on far horizon.

Sun is unclipped, so in Cycles, you don't need any light source, other than this HDRI for realistic shadows.

Methodology:
140 photos of the environment with DSLR on a panoramic head (7 expositions) with 2 EV spacing + 9 photos with 1,66 EV spacing of only the sun with ND4000 (12 stops) filter and 9 photos with 1,66 EV spacing with ND1000 stacked with ND4000 filter (10+12=22 stops).