There are way too many unanswered questions to give you a definite answer. Are you the defendant? The facts of the two suits must be related to be consolidated. Are they? Consolidation can mean a savings in litigation costs, maybe. You're going to have to talk with an attorney.
This may work. But due to many other reasons, it may not work. The debt may have been sold. There may be two different law firms.
On the flip side, what if they stay separate and the attorneys fail to prosecute? You may be able to avoid part of the debt on a judgment (at least momentarily).
More importantly, this is more of a band aid approach to your problem. Meaning, this will not cure your problems only delay and possibly increase attorney fees not decrease (as I am assuming is your goal).
We are a debt relief agency. We help people file for relief under the Bankruptcy Code.
If you live in Arizona, please contact me for actual advice; this is just speculation. It certainly is not legal advice. I don't have enough information to give actual legal advice. I can only take the limited information presented and provide a idea of what you might do and how it may turn out.