user11674: In the above sutta the Buddha said that one knows every step one is untertaking. Whether it's walking, sitting, standing, lying down, bending etc. Does this imply simply awareness of body sensations (since the sutta is titled kaya which translates as body)?
How does this sutta then differ from Anapanasati Sutta? 

user295: 
OP: Whether it's walking, sitting, standing, lying down, bending etc. Does this imply simply awareness of body sensations (since the sutta is titled kaya which translates as body)?

This is to be mindful of the sensations when doing these activities as sensations lead to craving, unwholesome roots, perception and thoughts which can be subjected to corruption.
For a more detailed description see: ignoring thoughts vs understanding them

OP: How does this sutta then differ from Anapanasati Sutta?

The 1st tetrads of Ānāpānasati is also Kayagatasati using the breath as a proxy as the breath is the body conditioner (Kaya Sankhara).


11674: <p>In the above sutta the Buddha said that one knows every step one is untertaking. Whether it's walking, sitting, standing, lying down, bending etc. Does this imply simply awareness of body sensations (since the sutta is titled kaya which translates as body)?</p>

<p>How does this sutta then differ from Anapanasati Sutta? </p>
 295: <blockquote>
  <p><strong>OP: Whether it's walking, sitting, standing, lying down, bending etc. Does this imply simply awareness of body sensations (since the sutta is titled kaya which translates as body)?</strong></p>
</blockquote>

<p>This is to be mindful of the sensations when doing these activities as sensations lead to craving, unwholesome roots, perception and thoughts which can be subjected to corruption.</p>

<p>For a more detailed description see: <a href="https://buddhism.stackexchange.com/a/37510/295">ignoring thoughts vs understanding them</a></p>

<blockquote>
  <p><strong>OP: How does this sutta then differ from Anapanasati Sutta?</strong></p>
</blockquote>

<p>The 1st tetrads of <a href="https://en.wikipedia.org/wiki/Anapanasati" rel="nofollow noreferrer">Ānāpānasati</a> is also Kayagatasati using the breath as a proxy as the breath is the body conditioner (Kaya Sankhara).</p>

<p><a href="https://i.stack.imgur.com/dPYiA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dPYiA.png" alt="enter image description here"></a></p>
