Telegraf SNMP data collection for fleet of devices

Thank you @willcooke for the detailed explanation and reference, I am able to absorb from the git reference but want to make sure my understandings are correct. If you do not mind, can you please clarify further:

  1. One telegraf config file with multiple devices/IPs to monitor, for example agents = [ "IP1", "IP2", "IP3" ], does telegraf fetch metrics parallelly from each IP or sequential?

  2. Creating multiple telegraf configuration files in telegraf.d directory, will telegraf create a separate thread for each file to run in parallel or process each file one after the other.

Thanks again,
Revanth