If possible, please provide some identification clarifying measurements of the relevant parts of these inflorescences, including flowers' parts, according to the inflorescences' and flowers' features used in the Flora of Au botanical key ref'd below .
May still turn out to identify to _Platylobium formosum_ instead of _Platylobium parviflorum_.
Ref's (in brief, without full citations):
• Flora of Au botanical key: https://keybase.rbg.vic.gov.au/keys/show/1475
• Flora of NSW online PlantNet: https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=gn&name=Platylobium