"I walk and speak."
Translation:Ja chodzę i mówię.
That's different. If you say "Ja idę" you are saying "I am going/I go", which is different to say that you are "walking". At least that's how I see it...
Short guide to how we interpret movement here:
to be going (on foot), to be walking = iść
to go (on foot), to walk = chodzić
to be walking (right now, but without a purpose/direction) = chodzić
https://www.duolingo.com/comment/14838384/Tips-For-Learning-Polish Tips For Learning Polish? - Duolingo
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