Bicester gained revenge over with a 33-27 home win.
Wallingford's 9-5 victory in December will probably dent Bicester's promotion hopes, but they could not seal the double.
Both scored five tries, but Bicester's Steve Risbridger converted four andOlli Henderson just one.
Skipper James Shouler's try gave Bicester the lead, before the visitors hit back through centre John Collett and No 8 Kris Blasko.
Risbridger converted Martin Linstrom's try, but Lee Blewett and Gary Bridges restored Wallingford's lead, Henderson converting one.
Risbridger converted his own try, plus two from John Rollason, while Collett scored a late second.
Two missed penalties from Ed Marno were the closest Gosford All Blacks came to scoring in their 39-0 loss to Newbury Stags.
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