Mutli-class Question: Ranger (Falconer) + Druid w / Eagle Domain

[BPorter]

If a Ranger (Falconer) multi-classes into Druid and takes the Eagle Domain, do those benefits apply to his existing animal companion or does he have to take a 2nd animal (technically referred to as a familiar in the text)?

[Rycaut]

By RAW animal companions and familiars are different and can't be combined.

That said in a home game not PFS I might work with a player to devise a solution

[BPorter]

That's what I thought but wanted to double check. Thanks!