be onto something

Verb

To have gained an insight that could lead to future success.

Japanese Meaning

何かに気づいていて、今後の成功につながる可能性を示唆する洞察を持っている状態 / 新たな発見の兆しがあり、成功への糸口を掴んでいる様子

If we combine these two observations, I think we might be onto something.

この二つの観察を組み合わせれば、何か有望な手がかりを掴んでいるかもしれない。

Sense（1）

To have gained an insight that could lead to future success.

This product could be a game changer. I think you are onto something.