# HLA monitoring two sources

**URL:** <https://discuss.saleae.com/t/hla-monitoring-two-sources/1044>\
**Category:** Extensions\
**Created:** [May 26, 2021, 12:18am UTC](https://discuss.saleae.com/t/hla-monitoring-two-sources/1044 "2021-05-26T00:18:08Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![colin](https://avatars.discourse-cdn.com/v4/letter/c/e19b73/32.png) [@colin](https://discuss.saleae.com/u/colin)\
**Post date:** [May 26, 2021, 1:32am UTC](https://discuss.saleae.com/t/hla-monitoring-two-sources/1044/3 "2021-05-26T01:32:53Z")

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I just saw the existing Idea for this:

> **[Multiple inputs to HLAs - Logic 2 - Ideas and Feature Requests - Saleae](https://ideas.saleae.com/b/feature-requests/multiple-inputs-to-hlas/)**
>
> Currently HLAs only accept input from one analyzer. For some use-cases, taking input from multiple analyzers is necessary.

You can therefor delete the new entry you made in Ideas. Sorry, didnt see the other post here until now:

> [@Extension output message format](https://discuss.saleae.com/t/extension-output-message-format/1021/6):
>
> Thank you Tim actually my idea would have been to provide the output of the first analyzer to the second analyzer too (as well as to Logic 2), so that I can already perform some low -level analysis in the “layer 2” analyzer and then provide the decoded packets to the second one for further processing. In this way i can actually simulate a device that receives the packets. The way I then represent the different layers would be independent from each other.

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