With the union having won an NLRB election, the employer is required by law to bargain with the union in good faith.
https://www.nlrb.gov/about-nlrb/rights-we-protect/the-law/ba...
It seems like that was your point
> Same tactic Starbuck's is using - insist that the store needs to negotiate via the union, while simultaneously refusing to engage with the union.
> and it's totally within Apple's right to do so.