Are there issues with running two concurrent delta crawls?

Question

We noticed that with two delta crawls running in parallel from the same @odata.nextLink parameter can generate two different skipTokens. Are there any problems with issuing concurrent delta crawls over the same link (or start point), e.g. state trampling?

Additionally, is this a potential concern if one delta crawl is running without a timestamp parameter (https://learn.microsoft.com/en-us/graph/api/driveitem-delta?view=graph-rest-1.0&tabs=http#example-4-retrieving-delta-results-using-a-timestamp), and the second delta crawl is running with a timestamp?