It did work, but not with the resistors shown in the last post. With R2 ( the I/p resistor ) 130K and R1 ( the feedback resistor ) 150K it worked well. With a second XOR gate wired as an inverter, the output was very clean and I was able to build a Schmitt trigger oscillator with it.
Beware that with feedback resistors > OR = 180K you start to observe spurious oscillation on the negative going transitions at about 5 MHz. The higher the resistor value the more oscillations are observed. Note, I did have a 100n decoupling cap in place, so that's not to blame for the oscillations.
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