"Easier than polyglot" does not mean "easy". :-) But I took a bit of time to produce a three-language quine relay elsewhere in this thread [1], and it is relatively easy to follow. The quine stuff (and thus every necessary quoting) is done in Ruby here, Python and Java only prints an appropriately quoted string.

Of course there should be several intermediate steps to keep the number of quotes reasonable (since it will be exponentially increasing in most languages), and that's probably why there are hexdumps after about 20ish languages.

[1] https://news.ycombinator.com/item?id=33109200