You can bridge them together using LNbits currently.
RE native support, we’d consider a PR from an external contributor but we won’t be implementing it ourselves
Discussion
Yes, LNbits-bridge (via lndhub) is what I'm currently using. But It's not showing the same balance as phoenixd...i think it gets confused with that unspendable credit/reserve balance. Besides, the lnbits code base makes me really nervous; not leaving more than 100k sats on there
Native Zeus support would be nice.