Brea and Gonzalez won their first title since coming back together last week at the Cupra Danish Padel Open, and have now put themselves into the Austrian quarter-finals.
Elsewhere, qualifiers Lucia Martinez and Marta Barrera got into the quarter-finals, the first-ever for the young Barrera, as they bested Melania Merino and Ana Catarina Nogueira.
The qualifiers are the only couple outside of the top eight to have their ticket to the final eight as all duos made good on their role as favourites.
Watch the court 2 and 3 highlights from Thursday below!
Matches in chronological order:
Delfi Brea / Bea Gonzalez (4) vs Marta Caparros / Carmen Goenaga
Lucia Martinez / Marta Barrera vs Melania Merino / Ana C. Nogueira
Mapi S. Alayeto / Majo S. Alayeto (7) vs Marina Guinart / Carolina Navarro
Lucia Sainz / Aranza Osoro (5) vs Giulia Sussarello / Emily Stellato
Virginia Riera / Tamara Icardo (6) vs Marta Talavan / Lorena Rufo