From: https://www.irs.gov/retirement-plans/how-much-salary-can-you-defer-if-youre-eligible-for-more-than-o...

"The amount of salary deferrals you can contribute to retirement plans is your individual limit each calendar year no matter how many plans you're in. This limit must be aggregated for these plan types:

• 401(k)
• 403(b)
• SIMPLE plans (SIMPLE IRA and SIMPLE 401(k) plans)
• SARSEP

If you’re in a 457(b) plan, you have a separate limit that includes both employee and employer contributions."

...

"Elective deferral limit

The amount you can defer (including pre-tax and Roth contributions) to all your plans (not including 457(b) plans) is $23,000 in 2024"

457(b) is deferred compensation (nonqualified plan), which is different than an ERISA retirement:

https://www.irs.gov/retirement-plans/irc-457b-deferred-compensation-plans

Is that what you wanting, clarity?