Side Products of Dow's process

In [Dow's process](https://en.wikipedia.org/wiki/Dow_process) of manufacture of phenol, $\ce{PhCl}$ is fused with $\ce{NaOH}$ at high temperature and pressure. What are the possible side products? And what is the intermediate formed?


I think the intermediate will be benzyne. After the formation of benzyne, $\ce{OH-}$ nucleophilic attack takes place. the reaction mixture also contains some phenoxide ions. So Diphenyl ether is a possible side product (Formed by nucleophilic attack of $\ce{PhO-}$). But the answer given species two side products: Diphenyl ether and p-phenyl phenol. How can I explain the second product?




Before we can consider the reaction, we must consider the conversion of the reactants into the reacting species:


[![enter image description here](https://i.stack.imgur.com/IJFaw.png)](https://i.stack.imgur.com/IJFaw.png)
[![enter image description here](https://i.stack.imgur.com/mcPLy.png)](https://i.stack.imgur.com/mcPLy.png)


Now, we may consider the reaction occurring between these two species:


[![enter image description here](https://i.stack.imgur.com/EkeaF.png)](https://i.stack.imgur.com/EkeaF.png)
[![enter image description here](https://i.stack.imgur.com/jZK9M.png)](https://i.stack.imgur.com/jZK9M.png)


The product of this reaction is now easily converted into para-phenyl phenol by an acid workup.


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