Is mixing WebSocket and REST okay?

Question

RESTful API

The site has a chat and a few other elements updated with WebSocket. At the same time, during the initial loading of the site, the generated template is given using REST.
Is it okay to mix these 2 approaches or is it better to switch to one?

Answer 1

It's okay to mix.
They have different tasks. WebSocket forms an operational two-way communication, which the REST API does not provide

Answer 2

API: for actively influencing the
WS system: for real-time messages and subscriptions to server events (reaction)