Left malt pipe in Anvil foundry whilst raising temp to boil

[x3la]

After mashing at 65C and then mashing out for 10 minutes at at 75C, I set my Anvil Foundry to boil and got distracted and did not remove the malt pipe/mash until it hit 83C (this probably took 20 mins).

What's the likely consequence of this? Was this long enough to have extracted Tannins and made the beer astringent?

 

[hopjuice_71]

As long as your pH wasn't weirdly high (unlikely) it will be totally fine.