Can you hear a difference between ist and isst?

[wilhelmganchez]

Example: "Er ist in ihrem Haus," could be, "Er isst in ihrem Haus." right?

[nimbus77]

I just asked my girlfriend who is from western Germany. According to her there is no difference in pronunciation.

[Vestpocketvenus]

Could be both. ist = is / isst = eating.
Er ist in ihrem Haus. He is in her house.
Er isst in ihrem Haus. He is eating at her house.