Time Diff Between 2 Values In The Same Column?

Here is the sample data
nType dCDServerTime
02006-05-12 03:50:46.770
12006-05-12 04:00:59.153
962006-05-12 04:01:23.827
962006-05-12 04:16:01.297
142006-05-15 05:02:46.857
202006-06-23 03:23:36.970

I am trying to find the time diff between dCDServerTime of the "first" ntype = 1 and the "first" ntype = 96. There can be any number of rows with 1 and 96 but rows with 1 always come before those with 96.

I tried by putting a subset of the above result into a table variable but don't seem to get ahead without declaring more variables.

declare @t table
(Type int, ServerTime datetime)
insert into @t
select top 1 nType,dCDServerTime from tblEvent
where nGlobalCaseID = 11901643 and nType = 1
UNION
select top 1 nType,dCDServerTime from tblEvent
where nGlobalCaseID = 11901643 and nType = 96
select * from @t

Is it possible to do it with a single select?