Why Tom van Flandern measured a nearly infinite speed of solar gravity? Because gravity seems a
merging dual pressure force created by the Axion oscillating string vacuum pressure, fixed around the sun, by 2x so called new physics (G)SABHs
(Galxy/ Stellar Anchor Black Holes) . also observed around galaxies by the James Webb telescope. That seems also the source of the Hierarchy problem.
see: The O‘Connell effect in eclipsing binaries explained by mass related light speed extinction and addition (LASOF) of stars and even planets.