No, there is no relationship between the Snake Charmer and JT65. The tones used and the number of steps are not similar.
The Snake Charmer (not my name for the signal, Hugh Stegman dubbed it that) typically uses 32 tones, however I have seen 8 to 64 used. These tones are typically spread across about 2 kHz of bandwidth, the specific bandwidth depending on the mode the Snake Charmer is in. JT65 uses, surprise, 65 tones, spread over 175 Hz of bandwidth.
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