This hadith is narrated on the authority of Hisham with the same chain of transmitters, but in the hadith narrated by him there is no mention of the story of 'Abdullah b. Abu Bakr.
عَنْ هِشَامٍ بِهَذَا الإِسْنَادِ وَلَيْسَ فِي حَدِيثِهِمْ قِصَّةُ عَبْدِ اللَّهِ بْنِ أَبِي بَكْرٍ
أَخْبَرَنِي عَبْدُ اللَّهِ بْنُ أَبِي بَكْرٍ بِهَذَا الإِسْنَادِ مِثْلَ حَدِيثِ هِشَامِ بْنِ عُرْوَةَ
This hadith has been narrated on the authority of Hishan through the same chain of transmitters but with this addition (that by both fathers of yours) he meant Abu Bakr and Zubair.
حَدَّثَنَا هِشَامٌ بِهَذَا الإِسْنَادِ وَزَادَ تَعْنِي أَبَا بَكْرٍ وَالزُّبَيْرَ