> That still does not make Sanskrit an ancestor language of English
You are taking 'ancestor' in a strict technical sense, which was clearly not my intention.
> though both English and Sanskrit do share a common ancestry several thousand years ago
And those roots can be found and recognized in the subsequent languages, and there lies the value.
That wasn’t clear to me. Yes, they share similar roots because they have a common ancestor language. Just like any pair of extinct or extant languages descended from PIE.
> which was clearly not my intention.
You did not express that clearly enough then.
> You are taking 'ancestor' in a strict technical sense, which was clearly not my intention.
Blutly, this was not obvious, and what you suggested would have been equally true if you'd said:
Because Lithuanian has about as much in common with PIE as Sanskrit does.