Jan Harmen Steenkamp, b7 - Another Jan child?

The two baprisms uploaded on Jan Harmen Steenkamp profile are somewhat confusing. Or, perhaps, I'm not seein something?

Thanks to Private's careful work transcribing, it's possible to put the data here:
1721. 19. do. [8br] Jan. Ouders: Jan Steenkamp, en Johanna van Nek. Getuijgen Caspar Batenhorst, en de Moeder.

1724. 3. xbr. Jan Harmens. Ouders: Jan Harmensz. Steenkamp, en Johanna Dirksz. Getuijgen: Andries Mulder, en Susanna van Dijk.

Should there be another Jan profile for the parents Jan Steenkamp, SV/PROG & Johanna "Jannetje" van Eck, SM (daughter of Adriaan Dirks vEck)?

That is, besides the 1718 Jan Steenkamp, b3 from the father's first marriage?
1718. Den 18de Dito [Septbr]. Jan en Gijsie kinderen van Jan Stinscham en Gijsie Vissers. Getùijgen Hendrik Gildenhuijsen, Elsebe Mijer en Catharina Olivier?

Perhaps I'm missing something obvious?