count of time ranges in other time ranges

[ChynTi]

Hi guys,
I'm struggling with formula, which will count the number of operations "name" did simultaneously, even partially.

I'd like to have a 1 or 0 information in new column (1 = the time interval exist, even partially, anywhere else).

Data looks like this:
[TABLE="width: 500"]
<tbody>[TR]
[TD]name[/TD]
[TD]start[/TD]
[TD]end[/TD]
[/TR]
[TR]
[TD]Mark
[/TD]
[TD]01.06.2019 0:22:33[/TD]
[TD]01.06.2019 4:36:26[/TD]
[/TR]
[TR]
[TD]Steve[/TD]
[TD]01.06.2019 23:54:17[/TD]
[TD]02.06.2019 2:40:11[/TD]
[/TR]
[TR]
[TD]Mark[/TD]
[TD]01.06.2019 0:15:36[/TD]
[TD]01.06.2019 0:44:27[/TD]
[/TR]
[TR]
[TD]Peter[/TD]
[TD]01.06.2019 0:44:36[/TD]
[TD]01.06.2019 1:04:08[/TD]
[/TR]
[TR]
[TD]Peter[/TD]
[TD]01.06.2019 1:07:41[/TD]
[TD]01.06.2019 1:08:44[/TD]
[/TR]
[TR]
[TD]Steve[/TD]
[TD]02.06.2019 0:55:30[/TD]
[TD]02.06.2019 1:28:06[/TD]
[/TR]
[TR]
[TD]Peter[/TD]
[TD]02.06.2019 1:12:40[/TD]
[TD]02.06.2019 1:32:34[/TD]
[/TR]
[TR]
[TD]Mark[/TD]
[TD]02.06.2019 4:38:56[/TD]
[TD]02.06.2019 5:05:53[/TD]
[/TR]
</tbody>[/TABLE]


e.g. first and third row should have "1", because Mark was working on two different things for a while. Last row should be 0, Mark did no other operation at that time.

Thanks in advance for any help.

Josef