How to show streamed input with 'less'

Question

I'd like to use journalctl -f and pass that content into less for the following reasons:

• Horizontal scrolling for long lines (instead of line wrapping)
• Easy vertical scrolling

So less works fine with static content (like a file or terminated streaming data), but can it also work with unterminated streaming data?

I'm looking for something like this:

journalctl -f | less -???

If I try this now, less will wait and not show any data until I press Ctrl+C, then it will show an empty file.

Edit: This is not about tail -f – tail can only read files from disk, not streaming data piped in from stdin.

Edit2: It's not just about journalctl alone. I'm using JSON output with -o json and pretty-print that using jq. This will be part of the pipeline, but was left out for simplicity of this question. If I can stream anything into less, I can also insert a formatter into the pipeline.