My sense would be that IAG are dipping their toe in the water to protect their long haul interests in Barcelona in particular, Level is Vueling and Iberia by another name and IMHO is in a holding pattern (excuse the pun) until IAG do or definitively do not make an advancement on Norwegian.
Willie Walsh has said IAG is not interested, I sense that if the Lufthansa group get serious about Norwegian, then IAG make act differently. Apart from Norwegian's general health they do also have a very big order book and a lot of crew ... the Max challenges asnd associated knock on effect in the market may make Norwegian's assets attractive....
..so, until that becomes clear Level will be in a wait and see position , me thinks...