LTM4671 - parallel operation

Hi,

according datasheet page 15:
'For parallel operation of N-channels, tie the VOUT, the FB
pins and VOSNS– pins together but only hooking up one
VOSNS+ (VOSNS) pin to the VOUT so that all the paralleling
channels can share the same error amplifier and same
top 60.4k feedback resistor.'

In figure 31 (example for parallel operation) VOSNS1+ und VOSNS2+ are connected together. Why?

Regards,
Andreas

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