They told me the process takes around 10-15 days after I send a technical challenge (tech challenge should take 2-3h but it takes around 5h). After I sent the test, they stopped to contact me, I wrote 15 days later and they told me they need more time, "we'll contact you this week"...I wrote again a month later to confirm if they did reject me, they said "no, we'll contact you in few days to schedule next interview"...it was like a month ago and I never received more messages