<p>I have an ext combobox which uses a store to suggest values to a user as they type. </p>

<p>An example of which can be found here: <a href="http://extjs.com/deploy/ext/examples/form/combos.html" rel="nofollow noreferrer">combobox example</a></p>

<p>Is there a way of making it so the <strong>suggested text list</strong> is rendered to an element in the DOM. Please note I do not mean the "applyTo" config option, as this would render the whole control, including the textbox to the DOM element.</p>

So clarify, you want the selected text to render somewhere besides directly below the text input. Correct?
ComboBox is just a composite of
Ext.DataView
, a text input, and an optional trigger button. There isn't an official option for what you want and hacking it to make it do what you want would be really painful. So, the easiest course of action (other than finding and using some other library with a component that does exactly what you want) is to build your own with the components above:
Create a text box. You can use an
Ext.form.TextField
if you want, and observe the keyup event.
Create a DataView bound to your store, rendering to whatever DOM element you want. Depending on what you want, listen to the 'selectionchange' event and take whatever action you need to in response to the selection. e.g., setValue on an Ext.form.Hidden (or plain HTML input type="hidden" element).
In your keyup event listener, call the store's filter method (see
doc
), passing the field name and the value from the text field. e.g., store.filter('name',new RegEx(value+'.*'))
It's a little more work, but it's a lot shorter than writing your own component from scratch or hacking the ComboBox to behave like you want.