Carefully confirming the identification required foliage details' info, as well as these beaut flowers, so I opened the second photograph in original full resolution and hunted around through this photograph until, i had inspected multiple leaflets, including on average their lacking marginal teeth, and eventually spotted a full compound, ternate, leaf in the upper left hand corner of this photograph.
References (in brief, without full citation):
• Flora of NSW online PlantNet: → https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=gn&name=Clematis → https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Clematis~glycinoides Viewed: 2024 September 28th .