Chain wrench requires dexterity, practice & perseverance as it’s difficult to adjust set up, in position within confined spaces.
Try short sharp shock tapping the filter with a soft mallat hammer or wood block & hammer to loosen it. Be sure not to overdo damage the filter in situ as your vehicle will be immobilised with oil everywhere on start up!
I now use a chain wrench or steel banded strap wrench with the chain/strap already located at both ends to the vertical hinged handle similar to these.
Thanks for your reply pimval. I have a rubber hammer, I'll give that a try. But I found the chain wrench kept slipping and scoring the cartridge , and as you say was wary of damaging it.