lte with or conditional not working

$qb->select(array('c.id'))
->from('Veiss\BoletusBundle\Entity\Calendar', 'c')
->where("(c.endDate >= 111) OR (c.startDate >= 222)")

returns correctly:
"SELECT c0_.id AS id0 FROM Calendar c0_ WHERE (c0_.endDate >= 111) OR (c0_.startDate >= 222)"

but lte condition:
->where("(c.endDate <= 111) OR (c.startDate >= 222)")

returns incorrectly:
"SELECT c0_.id AS id0 FROM Calendar c0_ WHERE (c0_.endDate = 222)"

I have tested that an same occurs with "expr()->lte"