Spellchecking with LT in LibreOffice?

Is there a way to spell check only with LT in LibreOffice?
So far it looks like hunspell does the check and if I turn it off in Language Aids then no spellchecking is done at all.

There is no way to run a grammar check when LO-spellchecking is switched off. So spellchecking is always done by LO itself. The LT-grammar check runs without LT-spellchecking.