Example of the sensitivity of the hyleg / alchocoden match at the time of birth
We take as an example the natal chart of Alberto SORDI :
born on 15 June 1920 at 07:25 (= 07:25 AM )
Place Rome, Italy, 41n54, 12e29
Timezone MEDT h2e (is daylight saving time)
data from https://www.astro.com/astro-databank/Sordi,_Alberto
We see that SU and MO can't be taken as hyleg. The only point to be taken as hyleg is POF or ASC. And the alchocoden is ME. But ME is cadent. So, according to the natal birth hour (7:25) Y = 23.13.
If we make a rectification of 5 min (7:20), it is possible to apply the method of dynamic houses: ME is then angular. We obtain the following table :
with the Bonatti hylegial index :
Note that MO, POF and sygyzy have a dignity +.