With the kiln supplied by Kiln-direct, the process takes 24 to 36 hours. When the heat-treating process is finished, the moisture content of the firewood has been reduced to between 8% and 12%.  Jim attributes the growth of the business to old-fashioned hard work. I focused on this division and ran it as a business and not as a hobby, he said.
Simultaneously is defined as going on at the same time. If you are singing and dancing at the same time, this is an example of a situation where you are singing and dancing simultaneously. Adverb.
Concurrent means the sentences run side by side at the same time. Consecutive means one follows the other. So with what you wrote, the 90 days will overlap, (be at the same time,) as the first 90 days of the 190 day sentence.