Yes, for absolutely no reason other than spare time and curiosity, I developed some astia 100F in RA4 chems.
The result was a very thick negative image, despite running it for only 45 sec at a lukewarm temp. The image would probably be printable- it certainly was scannable.
Any suggestions? Next I'll try a more dilute mix at lower temp.
Maybe let it sit in the blix for 10 min or so, there is way more silver in film than in RA4 paper, your thick neg probably has a lot of metallic silver in it. C41 bleach is approx 6 min and so is the fixer, without looking at the instructions.
Your wish is my command. I am attaching a scan of a quick self portrait. No adjustments other than flipping the neg to positive. The sheet was rather clumsily handled, please pay not attention to the drying marks etc.