The evidence does not directly show a relationship between 毓 (U+6BD3) and WS2001-02259-SAT-06739. Rather, as I understand it, the text says that the ancient form of the second character in the term being glossed, 粥, written 鬻 (U+9B3B), is derived from WS2001-02259-SAT-06739 and 鬲 (U+9B32). It's plausible that these are variants: other sources relate 育 and 毓, and the text here says that WS2001-02259-SAT-06739 is has the sound 育. So they apparently share a reading. However, unless I'm missing something obvious here, it would be good to see other evidence that suggests the variant relationship.

A variant of 粥, 𩱱, has 毓 as its phonetic. I think the deduction that SAT-06739 is a variant of 毓 is logical.