CV input to OSC1 affects OSC2 (??)

[yeskeys]

I initialize a preset.
Then I route some CV from my eurorack into OSC1 CV input (it's the first one on the back panel).
OSC2 then tracks the pitch of OSC1.  If I route the CV into OSC2 instead, OSC1 is not affected.

Is this normal?  Again, I've tested on an initialized preset, so there's no sync of OSC1/OSC2 or any of the other modulation paths - the mod matrix is also blank.

Thanks in advance.

UPDATE: I just found that if I put a "blank" patch cable into OSC2 CV in, it "disconnects" OSC2 from OSC1 and OSC2 properly tracks the keyboard.

[DrJustice]

Yes, that's normal. As you just found out, there is normalization going on, so that the VCO2 pitch input is connected to VCO1 pitch input until you break the normalization by plugging a jack into VCO2 pitch.

[yeskeys]

Thanks Dr. J!