Where does “breastfeeding” come from?

I notice there's a problem with the chain provided: it contains two separate etymology lines that don't connect to each other (breast and pandemic are unrelated), and "breastfeeding" as a headword doesn't match the chain given. Could you clarify: 1. Is the headword "breast" or "breastfeeding"? 2. Should the chain only include the breast line (English breast → Old Norse brestr → Proto-Indo-European bʰr̥stís/bʰrews-)? 3. Are the pandemic/Greek πάνδημος elements included by mistake? Once confirmed, I can write an accurate one-sentence etymology.

breastfeeding (English): The activity of feeding a baby or young child...

Definitions

  1. The activity of feeding a baby or young child...

Ancestry of “breastfeeding”, step by step

breastfeeding traces back through two separate lines of ancestry.

via English feeding

StepLanguageWordMeaning
1Englishfeedingpresent participle of feed; An instance of giving...
2EnglishfeedTo give food to eat; To eat; To give to as...
3Galicianfedenthird-person plural present indicative of feder
4Old Englishfēdanto feed
5Proto-West Germanic*fōdijanto feed
6Proto-Germanicfōdijanąto feed; to give birth
7Proto-Indo-Europeanpeh₂-to protect; to shepherd

via English breast

StepLanguageWordMeaning
1EnglishbreastEither of the two organs on the front of a female...
2Middle Englishbrestchest, thorax; The breast in several contexts;...
3Old Englishbrēostchest
4Proto-West Germanicbreustbreast, chest
5Proto-Germanicbreustąbreast, chest
6Proto-Indo-Europeanbʰrews-to break

Words derived from “breastfeeding

Every word from Proto-Indo-European peh₂-Every word from Proto-Germanic fōdijanąEvery word from Proto-West Germanic *fōdijan