Lets' go through some basics:
1. if you click Commander's USB button, does your 847 switch to USB?
2. if you click Commander's CW button, does your 847 switch to CW?
3. if you change Commander's frequency, doe your 847 QSY to the same frequency?
4. if you change your 847's mode from its front panel, does Commander display the new mode?
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-- its faster. You can report the resolution here after we track this down.