How to combine two searches into one?

[sulaimancds]

1st query

index=mail NOT [ | inputlookup suspicoussubject_keywords.csv | rename keyword AS query | fields query ]
| lookup email_domain_whitelist domain AS RecipientDomain output domain as domain_match
| where isnull(domain_match)
| lookup all_email_provider_domains domain AS RecipientDomain output domain as domain_match2
| where isnotnull(domain_match2)
| stats values(recipient) as recipient values(subject) as subject earliest(_time) AS "Earliest" latest(_time) AS "Latest" by RecipientDomain sender
| where mvcount(recipient)=1
| eval subject_count=mvcount(subject)
| sort - subject_count
| convert ctime("Latest")
| convert ctime("Earliest")

2nd query

index=o365
| dedup Id
| rename _time as DateTime, PolicyDetails{}.PolicyName as PolicyName, PolicyDetails{}.Rules{}.RuleName as RuleName, ExchangeMetaData.UniqueID as UniqueID, ExchangeMetaData.Subject as Subject, ExchangeMetaData.From as Sender, ExchangeMetaData.To{} as Recipient, ExchangeMetaData.CC{} as CC, ExchangeMetaData.BCC{} as BCC, ExchangeMetaData.RecipientCount as RecipientCount, PolicyDetails{}.Rules{}.ConditionsMatched.SensitiveInformation{}.Count as SensitiveInformationCount, PolicyDetails{}.Rules{}.ConditionsMatched.SensitiveInformation{}.SensitiveInformationDetections.DetectedValues{}.Name as PIIName, PolicyDetails{}.Rules{}.ConditionsMatched.SensitiveInformation{}.SensitiveInformationDetections.DetectedValues{}.Value as PIIValue, PolicyDetails{}.Rules{}.ConditionsMatched.SensitiveInformation{}.Location as Location
| dedup UniqueID
| rex field=Recipient "@(?<domain>.*$)"
| rex field=CC "@(?<domain>.*$)"
| rex field=BCC "@(?<domain>.*$)"
| eval domain=lower(domain)
| lookup email_domain_whitelist domain output domain as domain_match
| where isnull(domain_match)
| stats values(Recipient) values(CC) values(BCC) values(domain) Count sum(SensitiveInformationCount) by PolicyName Subject Sender
| sort +values(domain)

hi i would like to combine the first query into the second query , but the second query only shows those matching the policy , other than that it does not show. i want to show those matching the policy and if does  not match also , please show it, but policy field will be empty.  please advise. index will be o365.

[sulaimancds]

Please help