Which effects/technics to use on poorly recorded audio

Hello to all audio experts.

I have a few question and I'm really looking for some constructive advices.

We had a conference where we have recorded all the presentations with ExtremeCap 910 (http://www.avermedia.com/education/product/all/extremecap_910). We where capturing video with ExtremeCap 910 and for audio we where capturing it separately trough audio jack connected to the ExtremeCap 910. But we had some technical issues and at the end we had to record all the audio with ExtremeCap 910 recorder which was a few meters away from the speakers. Those the audio we have right now is very bad.

Here is the link to the audio. I have extracted it with VLC from the source: Dropbox - recorded_audio.mp3

Now my questions are:is

1. Which effects/techics in Audition CC should I use to try to improve the audio so people will be able to actually understand what the speakers are saying? I tried with (normalize, vocal enhancer and a few others) but with not great results. Audio is a little better but not enough.

2. Is our audio possible to improve based on the sample above.

3. Because I'm new to audio editing I would also like to know is it important in which sequence the effects in Audition CC are used? If yes, how do you know which effect to use first and which one to use last? I was reading about this on the internet and some are saying yes and others no so I'm not sure about this anymore.

Any help will be greatly appreciated.