My Windsor 65c has the anodes connected together as shown in the diagram in the link. I suppose that there is a small cost saving on the transformer.
https://www.vintage-radio.net/forum/...2&postcount=11
My Windsor 65c is accurate to within 1% up to 8 MHZ and within about 2% up to 80 MHz which I think is remarkably good for and instrument of this age. It has a well shielded attenuator so that the RF output can be adjusted to a low level and a filter on the mains supply to prevent R.F. leaking though the mains cable. This is what was needed in a radio service department to align AM receivers.
I agree with post #13. Don’t worry about the waveform if your Taylor 65B produces an R.F. output reasonably close to the correct frequency.
David